1055 lines
31 KiB
C++
1055 lines
31 KiB
C++
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 or GNU GPL-2.0+ (see README.md for details)
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#define _XOPEN_SOURCE
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#include <limits.h>
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#include <sys/epoll.h>
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#include "messenger.h"
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#include "msgr_iothread.h"
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#ifdef WITH_OPENSSL
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/pem.h>
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#include <openssl/ssl.h>
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#endif
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#define WR_TLS 1
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#define WR_XTS 2
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#define WR_NO_CSUM 4
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class msgr_op_writer_t
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{
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public:
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virtual bool write(uint8_t *src, size_t src_len, int flags = 0) = 0;
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virtual bool finish() = 0;
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};
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class copy_op_writer_t: public msgr_op_writer_t
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{
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protected:
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osd_messenger_t* msgr;
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osd_client_t* cl;
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size_t from;
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uint8_t *curbuf;
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size_t bufsize;
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size_t done;
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public:
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copy_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t *curbuf, size_t bufsize):
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msgr(msgr), cl(cl), from(cl->write_op_pos), curbuf(curbuf), bufsize(bufsize), done(0)
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{}
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void reset()
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{
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from = cl->write_op_pos;
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}
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bool write(uint8_t *src, size_t src_len, int flags = 0) override
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{
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if (from >= src_len)
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{
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from -= src_len;
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return true;
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}
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if (flags & WR_XTS)
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{
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msgr->op_encrypted_copy_buf(cl, curbuf, bufsize, src, src_len, from, done);
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}
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else
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{
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size_t n = src_len-from;
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if (n > bufsize-done)
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n = bufsize-done;
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if (cl->write_csum_state && !(flags & WR_NO_CSUM))
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XXH3_64bits_update(cl->write_csum_state, src+from, n);
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memcpy(curbuf+done, src+from, n);
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done += n;
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cl->write_op_pos += n;
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from += n;
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}
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if (from < src_len)
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return false;
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from = 0;
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return true;
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}
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bool finish() override
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{
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return true;
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}
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size_t get_done()
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{
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return done;
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}
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};
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class ssl_op_writer_t: public msgr_op_writer_t
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{
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osd_messenger_t* msgr;
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osd_client_t* cl;
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size_t from;
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uint8_t *curbuf;
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size_t bufsize;
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size_t done;
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public:
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ssl_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t *curbuf, size_t bufsize):
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msgr(msgr), cl(cl), from(cl->write_op_pos), curbuf(curbuf), bufsize(bufsize), done(0)
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{
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}
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void reset()
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{
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from = cl->write_op_pos;
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}
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void flush_ssl()
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{
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if (!cl->ssl_handshake_done)
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{
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if (!msgr->ssl_do_handshake(cl))
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return;
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}
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_flush_ssl();
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}
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bool _flush_ssl()
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{
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int r = BIO_read(cl->read_from_ssl, curbuf+done, bufsize-done);
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if (r > 0)
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done += r;
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if (done >= bufsize)
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{
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// Check if we've sent all buffered TLS data
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// ...Because we can't return true from this->write() if we haven't
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char *bio_buf = NULL;
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size_t bio_sz = BIO_get_mem_data(cl->read_from_ssl, &bio_buf);
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if (bio_sz > 0)
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{
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cl->ssl_more_to_buffer = true;
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return false;
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}
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}
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return true;
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}
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static inline bool write_to_ssl(osd_client_t *cl, uint8_t *src, size_t src_len, int flags, size_t & from)
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{
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size_t n = src_len-from;
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int ok = SSL_write_ex(cl->ssl_cli, src+from, n, &n);
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if (ok)
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{
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if (cl->write_csum_state && !(flags & WR_NO_CSUM))
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XXH3_64bits_update(cl->write_csum_state, src+from, n);
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cl->write_op_pos += n;
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from += n;
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}
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else
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{
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ok = SSL_get_error(cl->ssl_cli, ok);
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if (ok == SSL_ERROR_ZERO_RETURN)
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{
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fprintf(stderr, "Client %ju TLS disconnected\n", cl->client_id);
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cl->io_error = true;
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return false;
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}
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else if (ok != SSL_ERROR_WANT_READ && ok != SSL_ERROR_WANT_WRITE)
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{
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fprintf(stderr, "Client %ju TLS write error: %s. Disconnecting client\n", cl->client_id, ERR_error_string(ERR_get_error(), NULL));
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cl->io_error = true;
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return false;
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}
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}
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return true;
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}
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bool write(uint8_t *src, size_t src_len, int flags) override
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{
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if (from >= src_len)
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{
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if (cl->ssl_more_to_buffer && !_flush_ssl())
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return false;
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from -= src_len;
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return true;
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}
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if (!(flags & WR_TLS) || !cl->ssl_cli)
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{
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if (flags & WR_XTS)
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{
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msgr->op_encrypted_copy_buf(cl, curbuf, bufsize, src, src_len, from, done);
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}
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else
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{
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size_t n = src_len-from;
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if (n > bufsize-done)
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n = bufsize-done;
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if (cl->write_csum_state && !(flags & WR_NO_CSUM))
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XXH3_64bits_update(cl->write_csum_state, src+from, n);
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memcpy(curbuf+done, src+from, n);
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done += n;
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cl->write_op_pos += n;
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from += n;
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}
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}
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else
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{
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if (!cl->ssl_handshake_done)
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{
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if (!msgr->ssl_do_handshake(cl))
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return false;
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}
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if (cl->ssl_handshake_done)
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{
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if (!write_to_ssl(cl, src, src_len, flags, from))
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return false;
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}
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if (!_flush_ssl())
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return false;
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}
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if (from < src_len)
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return false;
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from = 0;
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return true;
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}
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bool finish() override
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{
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return _flush_ssl();
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}
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size_t get_done()
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{
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return done;
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}
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};
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class gcm_op_writer_t: public msgr_op_writer_t
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{
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osd_messenger_t* msgr;
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osd_client_t* cl;
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size_t from;
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uint8_t *curbuf;
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size_t bufsize;
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size_t done;
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public:
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gcm_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl, uint8_t *curbuf, size_t bufsize):
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msgr(msgr), cl(cl), from(cl->write_op_pos), curbuf(curbuf), bufsize(bufsize), done(0)
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{
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}
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void reset()
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{
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from = cl->write_op_pos;
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uint8_t iv[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
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int r = EVP_EncryptInit_ex(cl->enc_ctx, NULL, NULL, (uint8_t*)msgr->test_osd_aes_key.data(), iv);
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if (r != 1)
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{
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fprintf(stderr, "EncryptInit error: ");
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ERR_print_errors_fp(stderr);
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abort();
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}
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}
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bool write(uint8_t *src, size_t src_len, int flags) override
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{
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if (from >= src_len)
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{
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from -= src_len;
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return true;
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}
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if (!(flags & WR_TLS))
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{
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if (flags & WR_XTS)
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{
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msgr->op_encrypted_copy_buf(cl, curbuf, bufsize, src, src_len, from, done);
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}
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else
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{
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size_t n = src_len-from;
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if (n > bufsize-done)
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n = bufsize-done;
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if (!n)
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return false;
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if (cl->write_csum_state && !(flags & WR_NO_CSUM))
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XXH3_64bits_update(cl->write_csum_state, src+from, n);
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memcpy(curbuf+done, src+from, n);
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done += n;
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cl->write_op_pos += n;
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from += n;
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}
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}
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else
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{
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size_t n = src_len-from;
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if (n > bufsize-done)
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n = bufsize-done;
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if (!n)
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return false;
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int actual_out;
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if (EVP_EncryptUpdate(cl->enc_ctx, curbuf+done, &actual_out, src+from, n) != 1)
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{
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fprintf(stderr, "EncryptUpdate error: ");
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ERR_print_errors_fp(stderr);
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abort();
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}
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assert(actual_out == n);
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if (cl->write_csum_state && !(flags & WR_NO_CSUM))
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XXH3_64bits_update(cl->write_csum_state, src+from, n);
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done += n;
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cl->write_op_pos += n;
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from += n;
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}
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if (from < src_len)
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return false;
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from = 0;
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return true;
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}
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static void write_tag_to(osd_client_t *cl, uint8_t *dst)
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{
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int actual_out = 0;
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int r = EVP_EncryptFinal_ex(cl->enc_ctx, NULL, &actual_out);
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if (r != 1)
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{
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fprintf(stderr, "EncryptFinal error: ");
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ERR_print_errors_fp(stderr);
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abort();
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}
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assert(actual_out == 0);
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r = EVP_CIPHER_CTX_ctrl(cl->enc_ctx, EVP_CTRL_GCM_GET_TAG, 16, dst);
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assert(r == 1);
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}
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bool finish() override
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{
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// Tag is 16 bytes
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if (done >= bufsize)
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return false;
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if (bufsize-done < 16 || cl->enc_tag_size)
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{
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// No space for the full tag, but msgr_rdma expects us to always fill the whole buffer
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if (!cl->enc_tag_size)
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{
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write_tag_to(cl, cl->enc_tag);
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cl->enc_tag_size = 16;
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}
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size_t n = bufsize-done;
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if (n > cl->enc_tag_size)
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n = cl->enc_tag_size;
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memcpy(curbuf+done, cl->enc_tag+16-cl->enc_tag_size, n);
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done += n;
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cl->enc_tag_size -= n;
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return !cl->enc_tag_size;
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}
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// The whole tag fits at once
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write_tag_to(cl, curbuf+done);
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done += 16;
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return true;
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}
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size_t get_done()
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{
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return done;
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}
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};
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// FIXME Split into 3 classes - basic, tls and gcm
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class get_op_writer_t: public msgr_op_writer_t
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{
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osd_messenger_t* msgr;
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osd_client_t* cl;
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size_t from;
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size_t enc_size;
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size_t done_enc;
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void ssl_extend_buf(size_t more = 0)
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{
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size_t min_cap = cl->ssl_out_buf_size*2;
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if (min_cap < cl->ssl_out_buf_size+more)
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min_cap = cl->ssl_out_buf_size+more;
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if (min_cap < 16384)
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min_cap = 16384;
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if (cl->ssl_out_buf_cap < min_cap)
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{
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uint8_t *old_buf = cl->ssl_out_buf;
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uint8_t *old_end = old_buf + cl->ssl_out_buf_cap;
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cl->ssl_out_buf = (uint8_t*)realloc_or_die(cl->ssl_out_buf, min_cap);
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cl->ssl_out_buf_cap = min_cap;
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for (auto & iov: cl->send_list)
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{
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if (iov.iov_base >= old_buf && iov.iov_base < old_end)
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iov.iov_base = cl->ssl_out_buf + ((uint8_t*)iov.iov_base - old_buf);
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}
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}
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}
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void copy_ssl()
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{
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size_t prev_size = cl->ssl_out_buf_size;
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do
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{
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ssl_extend_buf();
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int r = BIO_read(cl->read_from_ssl, cl->ssl_out_buf+cl->ssl_out_buf_size, cl->ssl_out_buf_cap-cl->ssl_out_buf_size);
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if (r > 0)
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cl->ssl_out_buf_size += r;
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} while (cl->ssl_out_buf_size >= cl->ssl_out_buf_cap);
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if (cl->ssl_out_buf_size > prev_size)
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{
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cl->send_list.push_back((iovec){ .iov_base = cl->ssl_out_buf+prev_size, .iov_len = cl->ssl_out_buf_size-prev_size });
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}
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}
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public:
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get_op_writer_t(osd_messenger_t* msgr, osd_client_t* cl):
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msgr(msgr), cl(cl), from(cl->write_op_pos), enc_size(0), done_enc(0)
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{
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}
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void reset()
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{
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from = cl->write_op_pos;
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enc_size = 0;
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done_enc = 0;
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if (cl->enc_ctx)
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{
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uint8_t iv[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
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int r = EVP_EncryptInit_ex(cl->enc_ctx, NULL, NULL, (uint8_t*)msgr->test_osd_aes_key.data(), iv);
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if (r != 1)
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{
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fprintf(stderr, "EncryptInit error: ");
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ERR_print_errors_fp(stderr);
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abort();
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}
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}
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}
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void flush_ssl()
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{
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if (!cl->ssl_handshake_done)
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{
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if (!msgr->ssl_do_handshake(cl))
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return;
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}
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if (cl->send_list.size() >= IOV_MAX)
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{
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return;
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}
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copy_ssl();
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}
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bool write(uint8_t *src, size_t src_len, int flags) override
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{
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if (from >= src_len)
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{
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// Skip
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from -= src_len;
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return true;
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}
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if (cl->send_list.size() >= IOV_MAX)
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{
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return false;
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}
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if (flags & WR_TLS)
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{
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if (cl->ssl_cli)
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{
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if (!cl->ssl_handshake_done)
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{
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if (!msgr->ssl_do_handshake(cl))
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return false;
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}
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if (cl->ssl_handshake_done)
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{
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if (!ssl_op_writer_t::write_to_ssl(cl, src, src_len, flags, from))
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return false;
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}
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// Copy data to client's temporary SSL output buffer
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copy_ssl();
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if (from < src_len)
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return false;
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from = 0;
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return true;
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}
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else if (cl->enc_ctx)
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{
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// Encrypt data to client's temporary output buffer (all at once)
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size_t n = src_len-from;
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ssl_extend_buf(n);
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int actual_out;
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if (EVP_EncryptUpdate(cl->enc_ctx, cl->ssl_out_buf+cl->ssl_out_buf_size, &actual_out, src+from, n) != 1)
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{
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fprintf(stderr, "EncryptUpdate error: ");
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ERR_print_errors_fp(stderr);
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abort();
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}
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assert(actual_out == n);
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if (cl->write_csum_state && !(flags & WR_NO_CSUM))
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XXH3_64bits_update(cl->write_csum_state, src+from, n);
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cl->send_list.push_back((iovec){ .iov_base = cl->ssl_out_buf+cl->ssl_out_buf_size, .iov_len = n });
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cl->ssl_out_buf_size += n;
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cl->write_op_pos += n;
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from += n;
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if (from < src_len)
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return false;
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from = 0;
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return true;
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}
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}
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if (flags & WR_XTS)
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{
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if (!cl->write_op->enc_buf)
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{
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if (cl->send_list.size() >= IOV_MAX-1)
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{
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// Make sure that 1 encrypted buffer and 1 checksum fits
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return false;
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}
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// No way except than to allocate a temporary buffer and encrypt data to it
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assert(cl->write_op->req.hdr.opcode == OSD_OP_WRITE);
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enc_size = cl->write_op->req.rw.len - from + (from % 16);
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assert(enc_size > 0);
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cl->write_op->enc_buf = (uint8_t*)malloc_or_die(enc_size);
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cl->send_list.push_back((iovec){ .iov_base = cl->write_op->enc_buf, .iov_len = enc_size });
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}
|
|
assert(enc_size > 0);
|
|
msgr->op_encrypted_copy_buf(cl, cl->write_op->enc_buf, enc_size, src, src_len, from, done_enc);
|
|
assert(from == src_len);
|
|
}
|
|
else
|
|
{
|
|
if (cl->write_csum_state && !(flags & WR_NO_CSUM))
|
|
XXH3_64bits_update(cl->write_csum_state, src+from, src_len-from);
|
|
cl->send_list.push_back((iovec){ src+from, src_len-from });
|
|
cl->write_op_pos += src_len-from;
|
|
}
|
|
from = 0;
|
|
return true;
|
|
}
|
|
|
|
bool finish() override
|
|
{
|
|
if (cl->ssl_cli)
|
|
{
|
|
if (cl->send_list.size() >= IOV_MAX)
|
|
return false;
|
|
copy_ssl();
|
|
}
|
|
else if (cl->enc_ctx)
|
|
{
|
|
if (cl->send_list.size() >= IOV_MAX)
|
|
return false;
|
|
// Tag is 16 bytes
|
|
ssl_extend_buf(16);
|
|
gcm_op_writer_t::write_tag_to(cl, cl->ssl_out_buf+cl->ssl_out_buf_size);
|
|
// FIXME coalesce entries in ssl_out_buf
|
|
cl->send_list.push_back((iovec){ .iov_base = cl->ssl_out_buf+cl->ssl_out_buf_size, .iov_len = 16 });
|
|
cl->ssl_out_buf_size += 16;
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
void osd_messenger_t::outbox_push(osd_op_t *cur_op)
|
|
{
|
|
assert(cur_op->client_id);
|
|
auto cl_it = clients.find(cur_op->client_id);
|
|
if (cl_it == clients.end() || cl_it->second->peer_state == PEER_STOPPED)
|
|
{
|
|
delete cur_op;
|
|
return;
|
|
}
|
|
osd_client_t *cl = cl_it->second;
|
|
if (cur_op->op_type == OSD_OP_OUT)
|
|
{
|
|
clock_gettime(CLOCK_REALTIME, &cur_op->tv_begin);
|
|
cur_op->req.hdr.id = ++cl->send_op_id;
|
|
cl->sent_ops[cur_op->req.hdr.id] = cur_op;
|
|
}
|
|
else
|
|
{
|
|
// Remove the operation from received op list
|
|
bool found = false;
|
|
for (auto it = cl->received_ops.begin(); it != cl->received_ops.end(); it++)
|
|
{
|
|
if (*it == cur_op)
|
|
{
|
|
found = true;
|
|
cl->received_ops.erase(it, it+1);
|
|
break;
|
|
}
|
|
}
|
|
// Can't be not found because client IDs are unique
|
|
assert(found);
|
|
measure_exec(cur_op);
|
|
}
|
|
cl->write_ops.push_back(cur_op);
|
|
#ifdef WITH_RDMA
|
|
if (cl->peer_state == PEER_RDMA)
|
|
{
|
|
try_send_rdma(cl);
|
|
return;
|
|
}
|
|
#endif
|
|
if (!ringloop)
|
|
{
|
|
// FIXME: It's worse because it doesn't allow batching
|
|
while (cl->write_op || cl->write_ops.size())
|
|
{
|
|
try_send(cl);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!try_send(cl) && cl->write_state == 0)
|
|
{
|
|
cl->write_state = CL_WRITE_READY;
|
|
write_ready_clients.push_back(cl->client_id);
|
|
}
|
|
ringloop->wakeup();
|
|
}
|
|
}
|
|
|
|
void osd_messenger_t::inc_op_stats(osd_op_stats_t & stats, uint64_t opcode, timespec & tv_begin, timespec & tv_end, uint64_t len)
|
|
{
|
|
uint64_t usecs = (
|
|
(tv_end.tv_sec - tv_begin.tv_sec)*1000000 +
|
|
(tv_end.tv_nsec - tv_begin.tv_nsec)/1000
|
|
);
|
|
stats.op_stat_count[opcode]++;
|
|
if (!stats.op_stat_count[opcode])
|
|
{
|
|
stats.op_stat_count[opcode] = 1;
|
|
stats.op_stat_sum[opcode] = 0;
|
|
stats.op_stat_bytes[opcode] = 0;
|
|
}
|
|
stats.op_stat_sum[opcode] += usecs;
|
|
stats.op_stat_bytes[opcode] += len;
|
|
}
|
|
|
|
void osd_messenger_t::measure_exec(osd_op_t *cur_op)
|
|
{
|
|
// Measure execution latency
|
|
if (cur_op->req.hdr.opcode > OSD_OP_MAX)
|
|
{
|
|
return;
|
|
}
|
|
if (!cur_op->tv_end.tv_sec)
|
|
{
|
|
clock_gettime(CLOCK_REALTIME, &cur_op->tv_end);
|
|
}
|
|
uint64_t len = 0;
|
|
if (cur_op->req.hdr.opcode == OSD_OP_READ ||
|
|
cur_op->req.hdr.opcode == OSD_OP_WRITE ||
|
|
cur_op->req.hdr.opcode == OSD_OP_SCRUB)
|
|
{
|
|
// req.rw.len is internally set to the full object size for scrubs
|
|
len = cur_op->req.rw.len;
|
|
}
|
|
else if (cur_op->req.hdr.opcode == OSD_OP_SEC_READ ||
|
|
cur_op->req.hdr.opcode == OSD_OP_SEC_WRITE ||
|
|
cur_op->req.hdr.opcode == OSD_OP_SEC_WRITE_STABLE)
|
|
{
|
|
len = cur_op->req.sec_rw.len;
|
|
}
|
|
inc_op_stats(stats, cur_op->req.hdr.opcode, cur_op->tv_begin, cur_op->tv_end, len);
|
|
if (cur_op->is_recovery_related())
|
|
{
|
|
inc_op_stats(recovery_stats, cur_op->req.hdr.opcode, cur_op->tv_begin, cur_op->tv_end, len);
|
|
}
|
|
}
|
|
|
|
bool osd_messenger_t::ssl_do_handshake(osd_client_t *cl)
|
|
{
|
|
if (cl->ssl_handshake_done)
|
|
{
|
|
return true;
|
|
}
|
|
int r = SSL_do_handshake(cl->ssl_cli);
|
|
if (r > 0)
|
|
{
|
|
cl->ssl_handshake_done = true;
|
|
}
|
|
else
|
|
{
|
|
r = SSL_get_error(cl->ssl_cli, r);
|
|
if (r != 0 && r != SSL_ERROR_WANT_READ && r != SSL_ERROR_WANT_WRITE)
|
|
{
|
|
fprintf(stderr, "Client %ju TLS handshake error: %s, stopping client\n", cl->client_id, ERR_error_string(ERR_get_error(), NULL));
|
|
cl->io_error = true;
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool osd_messenger_t::try_send(osd_client_t *cl)
|
|
{
|
|
if (cl->peer_state == PEER_STOPPED || cl->peer_fd < 0)
|
|
{
|
|
return true;
|
|
}
|
|
if (cl->write_msg.msg_iovlen > 0 || !ringloop->space_left() && !use_sync_send_recv)
|
|
{
|
|
return false;
|
|
}
|
|
assert(cl->peer_state != PEER_RDMA);
|
|
get_op_writer_t wr(this, cl);
|
|
while ((cl->write_op || cl->write_ops.size()) && cl->send_list.size() < IOV_MAX)
|
|
{
|
|
if (!cl->write_op)
|
|
{
|
|
next_write_op(cl);
|
|
wr.reset();
|
|
}
|
|
osd_op_t *op = cl->write_op;
|
|
if (!op_write_to(cl, wr))
|
|
{
|
|
if (cl->io_error)
|
|
{
|
|
stop_client(cl->client_id);
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
if (!cl->write_op && op->op_type == OSD_OP_IN)
|
|
{
|
|
cl->send_free_ops.push_back(op);
|
|
}
|
|
}
|
|
if (!cl->send_list.size() && cl->ssl_cli)
|
|
{
|
|
wr.flush_ssl();
|
|
}
|
|
if (!cl->send_list.size())
|
|
{
|
|
cl->write_state = 0;
|
|
return true;
|
|
}
|
|
if (!use_sync_send_recv)
|
|
{
|
|
auto iothread = iothreads.size() ? iothreads[cl->peer_fd % iothreads.size()] : NULL;
|
|
io_uring_sqe sqe_local;
|
|
ring_data_t data_local;
|
|
io_uring_sqe* sqe = (iothread ? &sqe_local : ringloop->get_sqe());
|
|
if (iothread)
|
|
{
|
|
sqe_local = { .user_data = (uint64_t)&data_local };
|
|
data_local = {};
|
|
}
|
|
assert(sqe);
|
|
cl->send_list_size = 0;
|
|
for (auto & iov: cl->send_list)
|
|
{
|
|
cl->send_list_size += iov.iov_len;
|
|
}
|
|
cl->write_msg.msg_iov = cl->send_list.data();
|
|
cl->write_msg.msg_iovlen = cl->send_list.size() < IOV_MAX ? cl->send_list.size() : IOV_MAX;
|
|
cl->refs++;
|
|
ring_data_t* data = ((ring_data_t*)sqe->user_data);
|
|
data->callback = [this, cl](ring_data_t *data) { handle_send(data->res, data->prev, data->more, cl); };
|
|
bool use_zc = has_sendmsg_zc && min_zerocopy_send_size >= 0;
|
|
if (use_zc && min_zerocopy_send_size > 0 &&
|
|
cl->send_list_size/cl->write_msg.msg_iovlen < min_zerocopy_send_size)
|
|
{
|
|
use_zc = false;
|
|
}
|
|
if (use_zc)
|
|
{
|
|
io_uring_prep_sendmsg_zc(sqe, cl->peer_fd, &cl->write_msg, MSG_WAITALL);
|
|
}
|
|
else
|
|
{
|
|
io_uring_prep_sendmsg(sqe, cl->peer_fd, &cl->write_msg, MSG_WAITALL);
|
|
}
|
|
if (iothread)
|
|
{
|
|
iothread->add_sqe(sqe_local);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
cl->write_msg.msg_iov = cl->send_list.data();
|
|
cl->write_msg.msg_iovlen = cl->send_list.size() < IOV_MAX ? cl->send_list.size() : IOV_MAX;
|
|
cl->refs++;
|
|
int result = sendmsg(cl->peer_fd, &cl->write_msg, MSG_NOSIGNAL);
|
|
if (result < 0)
|
|
{
|
|
result = -errno;
|
|
}
|
|
// like set_immediate
|
|
tfd->set_timer_us(0, false, [this, result, cl](int){ handle_send(result, false, false, cl); });
|
|
}
|
|
return true;
|
|
}
|
|
|
|
size_t osd_messenger_t::copy_ops_to(osd_client_t *cl, uint8_t *dst, size_t dst_len)
|
|
{
|
|
if (cl->enc_ctx)
|
|
{
|
|
return copy_ops_to_with<gcm_op_writer_t>(cl, dst, dst_len);
|
|
}
|
|
return copy_ops_to_with<copy_op_writer_t>(cl, dst, dst_len);
|
|
}
|
|
|
|
template<typename T>
|
|
size_t osd_messenger_t::copy_ops_to_with(osd_client_t *cl, uint8_t *dst, size_t dst_len)
|
|
{
|
|
T wr(this, cl, dst, dst_len);
|
|
while (cl->write_op || cl->write_ops.size())
|
|
{
|
|
if (!cl->write_op)
|
|
{
|
|
next_write_op(cl);
|
|
wr.reset();
|
|
}
|
|
osd_op_t *op = cl->write_op;
|
|
if (!op_write_to(cl, wr))
|
|
{
|
|
if (cl->io_error)
|
|
return 0;
|
|
break;
|
|
}
|
|
if (!cl->write_op && op->op_type == OSD_OP_IN)
|
|
{
|
|
// this is a reply, free the op after sending it
|
|
cl->send_free_ops.push_back(op);
|
|
}
|
|
}
|
|
/*FIXME if (!wr.get_done() && cl->ssl_cli)
|
|
{
|
|
wr.flush_ssl();
|
|
}*/
|
|
return wr.get_done();
|
|
}
|
|
|
|
void osd_messenger_t::next_write_op(osd_client_t *cl)
|
|
{
|
|
cl->write_op = cl->write_ops.front();
|
|
cl->write_ops.pop_front();
|
|
if (cl->proto_csum_status == MSGR_CSUM_FULL || cl->proto_csum_status == MSGR_CSUM_PAYLOAD)
|
|
{
|
|
if (!cl->write_csum_state)
|
|
cl->write_csum_state = XXH3_createState();
|
|
XXH3_64bits_reset(cl->write_csum_state);
|
|
}
|
|
}
|
|
|
|
void osd_messenger_t::send_replies()
|
|
{
|
|
for (int i = 0; i < write_ready_clients.size(); i++)
|
|
{
|
|
uint64_t client_id = write_ready_clients[i];
|
|
auto cl_it = clients.find(client_id);
|
|
if (cl_it != clients.end() && cl_it->second->peer_state != PEER_RDMA && !try_send(cl_it->second))
|
|
{
|
|
write_ready_clients.erase(write_ready_clients.begin(), write_ready_clients.begin() + i);
|
|
return;
|
|
}
|
|
}
|
|
write_ready_clients.clear();
|
|
}
|
|
|
|
void osd_messenger_t::handle_send(int result, bool prev, bool more, osd_client_t *cl)
|
|
{
|
|
if (!prev)
|
|
{
|
|
cl->write_msg.msg_iovlen = 0;
|
|
cl->send_list.clear();
|
|
}
|
|
if (!more)
|
|
{
|
|
cl->refs--;
|
|
}
|
|
if (cl->peer_state == PEER_STOPPED)
|
|
{
|
|
if (cl->refs <= 0)
|
|
{
|
|
destroy_client(cl);
|
|
}
|
|
return;
|
|
}
|
|
if (result < 0 && result != -EAGAIN && result != -EINTR)
|
|
{
|
|
// this is a client socket, so don't panic. just disconnect it
|
|
fprintf(stderr, "Client %ju socket write error: %d (%s). Disconnecting client\n", cl->client_id, -result, strerror(-result));
|
|
stop_client(cl->client_id);
|
|
return;
|
|
}
|
|
if (result >= 0)
|
|
{
|
|
if (prev)
|
|
{
|
|
// Second notification - only free a batch of postponed ops
|
|
int i = 0;
|
|
for (; i < cl->zc_free_list.size() && cl->zc_free_list[i]; i++)
|
|
{
|
|
if (!((size_t)cl->zc_free_list[i] & 7))
|
|
delete cl->zc_free_list[i];
|
|
else
|
|
free((void*)((size_t)cl->zc_free_list[i] & ~(size_t)7));
|
|
}
|
|
if (i > 0)
|
|
cl->zc_free_list.erase(cl->zc_free_list.begin(), cl->zc_free_list.begin()+i+1);
|
|
return;
|
|
}
|
|
if (cl->send_list_size > result)
|
|
{
|
|
fprintf(stderr, "Client %ju socket write error: expected to send "
|
|
"%zu bytes with MSG_WAITALL but sent %u. Disconnecting client\n", cl->client_id, cl->send_list_size, result);
|
|
stop_client(cl->client_id);
|
|
return;
|
|
}
|
|
for (auto op: cl->send_free_ops)
|
|
{
|
|
if (more)
|
|
{
|
|
assert(!((size_t)op & 7));
|
|
cl->zc_free_list.push_back(op);
|
|
}
|
|
else
|
|
delete op;
|
|
}
|
|
if (more)
|
|
{
|
|
if (cl->ssl_out_buf_size)
|
|
{
|
|
cl->zc_free_list.push_back((osd_op_t*)((size_t)cl->ssl_out_buf | 1));
|
|
cl->ssl_out_buf = NULL;
|
|
cl->ssl_out_buf_cap = 0;
|
|
}
|
|
cl->zc_free_list.push_back(NULL); // end marker
|
|
}
|
|
cl->ssl_out_buf_size = 0;
|
|
cl->send_free_ops.clear();
|
|
cl->write_state = 0;
|
|
if (cl->write_op || cl->write_ops.size())
|
|
cl->write_state = CL_WRITE_READY;
|
|
if ((cl->proto_csum_status & MSGR_CSUM_NEG) && !cl->write_op && !cl->write_ops.size())
|
|
{
|
|
// Checksums negotiated, enable
|
|
cl->proto_csum_status = cl->proto_csum_status & (~MSGR_CSUM_NEG);
|
|
}
|
|
#ifdef WITH_RDMA
|
|
if (cl->rdma_conn && !cl->write_op && !cl->write_ops.size() && cl->peer_state == PEER_RDMA_CONNECTING)
|
|
{
|
|
// FIXME: Ignore pings during RDMA state transition
|
|
if (log_level > 0)
|
|
{
|
|
fprintf(stderr, "Successfully connected with client %ju using RDMA\n", cl->client_id);
|
|
}
|
|
cl->peer_state = PEER_RDMA;
|
|
// Add the initial receive request
|
|
init_recv_rdma(cl);
|
|
}
|
|
#endif
|
|
}
|
|
if (cl->write_state != 0)
|
|
{
|
|
write_ready_clients.push_back(cl->client_id);
|
|
}
|
|
}
|
|
|
|
static inline bool op_has_data_for_ssl(osd_op_t *op)
|
|
{
|
|
return (op->op_type == OSD_OP_IN
|
|
? (op->req.hdr.opcode == OSD_OP_SEC_LIST ||
|
|
op->req.hdr.opcode == OSD_OP_SHOW_CONFIG ||
|
|
op->req.hdr.opcode == OSD_OP_DESCRIBE)
|
|
: (op->req.hdr.opcode == OSD_OP_SEC_STABILIZE ||
|
|
op->req.hdr.opcode == OSD_OP_SEC_ROLLBACK ||
|
|
op->req.hdr.opcode == OSD_OP_SHOW_CONFIG)) && op->iov.count > 0;
|
|
}
|
|
|
|
static inline bool op_has_data_for_nonssl(osd_op_t *op)
|
|
{
|
|
return (op->op_type == OSD_OP_IN
|
|
? (op->req.hdr.opcode == OSD_OP_READ ||
|
|
op->req.hdr.opcode == OSD_OP_SEC_READ)
|
|
: (op->req.hdr.opcode == OSD_OP_WRITE ||
|
|
op->req.hdr.opcode == OSD_OP_SEC_WRITE ||
|
|
op->req.hdr.opcode == OSD_OP_SEC_WRITE_STABLE)) && op->iov.count > 0;
|
|
}
|
|
|
|
bool osd_messenger_t::op_write_to(osd_client_t *cl, msgr_op_writer_t & wr)
|
|
{
|
|
osd_op_t *op = cl->write_op;
|
|
// Header
|
|
if (!wr.write((op->op_type == OSD_OP_IN ? op->reply.buf : op->req.buf), OSD_PACKET_SIZE,
|
|
WR_TLS | (cl->proto_csum_status == MSGR_CSUM_PAYLOAD ? WR_NO_CSUM : 0)))
|
|
{
|
|
return false;
|
|
}
|
|
// Bitmap
|
|
if (op->op_type == OSD_OP_IN)
|
|
{
|
|
if (op->req.hdr.opcode == OSD_OP_SEC_READ && op->reply.sec_rw.attr_len > 0)
|
|
{
|
|
if (!wr.write((uint8_t*)op->bitmap, op->reply.sec_rw.attr_len, WR_TLS))
|
|
return false;
|
|
}
|
|
else if (op->req.hdr.opcode == OSD_OP_SEC_READ_BMP && op->reply.hdr.retval > 0)
|
|
{
|
|
if (!wr.write((uint8_t*)op->buf, (size_t)op->reply.hdr.retval, WR_TLS))
|
|
return false;
|
|
}
|
|
else if (op->req.hdr.opcode == OSD_OP_READ && op->reply.rw.bitmap_len > 0)
|
|
{
|
|
if (!wr.write((uint8_t*)op->bitmap, op->reply.rw.bitmap_len, WR_TLS))
|
|
return false;
|
|
}
|
|
}
|
|
else if (op->op_type == OSD_OP_OUT)
|
|
{
|
|
if ((op->req.hdr.opcode == OSD_OP_SEC_WRITE || op->req.hdr.opcode == OSD_OP_SEC_WRITE_STABLE) &&
|
|
op->req.sec_rw.attr_len > 0)
|
|
{
|
|
if (!wr.write((uint8_t*)op->bitmap, op->req.sec_rw.attr_len, WR_TLS))
|
|
return false;
|
|
}
|
|
else if (op->req.hdr.opcode == OSD_OP_SEC_READ_BMP && op->req.sec_read_bmp.len > 0)
|
|
{
|
|
if (!wr.write((uint8_t*)op->buf, (size_t)op->req.sec_read_bmp.len, WR_TLS))
|
|
return false;
|
|
}
|
|
}
|
|
// Operation data
|
|
if (op_has_data_for_ssl(op))
|
|
{
|
|
for (int i = 0; i < cl->write_op->iov.count; i++)
|
|
{
|
|
auto & iov = cl->write_op->iov.buf[i];
|
|
if (!wr.write((uint8_t*)iov.iov_base, iov.iov_len, WR_TLS))
|
|
return false;
|
|
}
|
|
}
|
|
else if (op_has_data_for_nonssl(op))
|
|
{
|
|
for (int i = 0; i < cl->write_op->iov.count; i++)
|
|
{
|
|
auto & iov = cl->write_op->iov.buf[i];
|
|
if (!wr.write((uint8_t*)iov.iov_base, iov.iov_len, (op->enc ? WR_XTS : 0)))
|
|
return false;
|
|
}
|
|
}
|
|
if (cl->proto_csum_status == MSGR_CSUM_FULL ||
|
|
cl->proto_csum_status == MSGR_CSUM_PAYLOAD && cl->write_op_pos > OSD_PACKET_SIZE)
|
|
{
|
|
cl->write_op->csum = XXH3_64bits_digest(cl->write_csum_state);
|
|
if (!wr.write((uint8_t*)&cl->write_op->csum, 8, WR_TLS|WR_NO_CSUM))
|
|
return false;
|
|
}
|
|
if (!wr.finish())
|
|
return false;
|
|
op_encrypt_free(cl);
|
|
cl->write_op = NULL;
|
|
cl->write_op_pos = 0;
|
|
return true;
|
|
}
|