Merge remote-tracking branch 'kiszka/queues/slirp' into staging
* kiszka/queues/slirp: slirp: Implement TFTP Blocksize option slirp: Remove unused return value of tftp_send_next_block slirp: Handle more than 65535 blocks in TFTP transfers slirp: improve TFTP performance slirp: Fix error reported by static code analysis slirp: Remove wrong type casts ins debug statements
This commit is contained in:
commit
6b80f7db8a
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@ -114,9 +114,9 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
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int win = 0;
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DEBUG_CALL("tcp_respond");
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DEBUG_ARG("tp = %lx", (long)tp);
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DEBUG_ARG("ti = %lx", (long)ti);
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DEBUG_ARG("m = %lx", (long)m);
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DEBUG_ARG("tp = %p", tp);
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DEBUG_ARG("ti = %p", ti);
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DEBUG_ARG("m = %p", m);
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DEBUG_ARG("ack = %u", ack);
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DEBUG_ARG("seq = %u", seq);
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DEBUG_ARG("flags = %x", flags);
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@ -124,7 +124,7 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
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if (tp)
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win = sbspace(&tp->t_socket->so_rcv);
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if (m == NULL) {
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if ((m = m_get(tp->t_socket->slirp)) == NULL)
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if (!tp || (m = m_get(tp->t_socket->slirp)) == NULL)
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return;
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tlen = 0;
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m->m_data += IF_MAXLINKHDR;
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104
slirp/tftp.c
104
slirp/tftp.c
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@ -37,6 +37,10 @@ static inline void tftp_session_update(struct tftp_session *spt)
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static void tftp_session_terminate(struct tftp_session *spt)
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{
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if (spt->fd >= 0) {
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close(spt->fd);
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spt->fd = -1;
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}
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g_free(spt->filename);
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spt->slirp = NULL;
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}
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@ -54,7 +58,7 @@ static int tftp_session_allocate(Slirp *slirp, struct tftp_t *tp)
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/* sessions time out after 5 inactive seconds */
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if ((int)(curtime - spt->timestamp) > 5000) {
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g_free(spt->filename);
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tftp_session_terminate(spt);
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goto found;
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}
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}
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@ -64,6 +68,7 @@ static int tftp_session_allocate(Slirp *slirp, struct tftp_t *tp)
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found:
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memset(spt, 0, sizeof(*spt));
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memcpy(&spt->client_ip, &tp->ip.ip_src, sizeof(spt->client_ip));
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spt->fd = -1;
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spt->client_port = tp->udp.uh_sport;
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spt->slirp = slirp;
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@ -92,37 +97,36 @@ static int tftp_session_find(Slirp *slirp, struct tftp_t *tp)
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return -1;
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}
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static int tftp_read_data(struct tftp_session *spt, uint16_t block_nr,
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static int tftp_read_data(struct tftp_session *spt, uint32_t block_nr,
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uint8_t *buf, int len)
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{
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int fd;
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int bytes_read = 0;
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int bytes_read = 0;
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fd = open(spt->filename, O_RDONLY | O_BINARY);
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if (spt->fd < 0) {
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spt->fd = open(spt->filename, O_RDONLY | O_BINARY);
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}
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if (fd < 0) {
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return -1;
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}
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if (spt->fd < 0) {
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return -1;
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}
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if (len) {
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lseek(fd, block_nr * 512, SEEK_SET);
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if (len) {
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lseek(spt->fd, block_nr * 512, SEEK_SET);
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bytes_read = read(fd, buf, len);
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}
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bytes_read = read(spt->fd, buf, len);
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}
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close(fd);
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return bytes_read;
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return bytes_read;
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}
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static int tftp_send_oack(struct tftp_session *spt,
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const char *key, uint32_t value,
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const char *keys[], uint32_t values[], int nb,
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struct tftp_t *recv_tp)
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{
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struct sockaddr_in saddr, daddr;
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struct mbuf *m;
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struct tftp_t *tp;
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int n = 0;
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int i, n = 0;
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m = m_get(spt->slirp);
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@ -136,10 +140,12 @@ static int tftp_send_oack(struct tftp_session *spt,
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m->m_data += sizeof(struct udpiphdr);
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tp->tp_op = htons(TFTP_OACK);
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n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%s",
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key) + 1;
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n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%u",
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value) + 1;
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for (i = 0; i < nb; i++) {
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n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%s",
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keys[i]) + 1;
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n += snprintf(tp->x.tp_buf + n, sizeof(tp->x.tp_buf) - n, "%u",
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values[i]) + 1;
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}
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saddr.sin_addr = recv_tp->ip.ip_dst;
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saddr.sin_port = recv_tp->udp.uh_dport;
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@ -193,23 +199,18 @@ out:
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tftp_session_terminate(spt);
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}
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static int tftp_send_data(struct tftp_session *spt,
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uint16_t block_nr,
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struct tftp_t *recv_tp)
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static void tftp_send_next_block(struct tftp_session *spt,
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struct tftp_t *recv_tp)
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{
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struct sockaddr_in saddr, daddr;
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struct mbuf *m;
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struct tftp_t *tp;
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int nobytes;
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if (block_nr < 1) {
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return -1;
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}
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m = m_get(spt->slirp);
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if (!m) {
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return -1;
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return;
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}
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memset(m->m_data, 0, m->m_size);
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@ -219,7 +220,7 @@ static int tftp_send_data(struct tftp_session *spt,
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m->m_data += sizeof(struct udpiphdr);
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tp->tp_op = htons(TFTP_DATA);
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tp->x.tp_data.tp_block_nr = htons(block_nr);
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tp->x.tp_data.tp_block_nr = htons((spt->block_nr + 1) & 0xffff);
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saddr.sin_addr = recv_tp->ip.ip_dst;
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saddr.sin_port = recv_tp->udp.uh_dport;
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@ -227,7 +228,7 @@ static int tftp_send_data(struct tftp_session *spt,
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daddr.sin_addr = spt->client_ip;
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daddr.sin_port = spt->client_port;
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nobytes = tftp_read_data(spt, block_nr - 1, tp->x.tp_data.tp_buf, 512);
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nobytes = tftp_read_data(spt, spt->block_nr, tp->x.tp_data.tp_buf, 512);
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if (nobytes < 0) {
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m_free(m);
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@ -236,7 +237,7 @@ static int tftp_send_data(struct tftp_session *spt,
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tftp_send_error(spt, 1, "File not found", tp);
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return -1;
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return;
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}
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m->m_len = sizeof(struct tftp_t) - (512 - nobytes) -
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@ -251,7 +252,7 @@ static int tftp_send_data(struct tftp_session *spt,
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tftp_session_terminate(spt);
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}
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return 0;
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spt->block_nr++;
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}
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static void tftp_handle_rrq(Slirp *slirp, struct tftp_t *tp, int pktlen)
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@ -260,6 +261,9 @@ static void tftp_handle_rrq(Slirp *slirp, struct tftp_t *tp, int pktlen)
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int s, k;
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size_t prefix_len;
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char *req_fname;
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const char *option_name[2];
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uint32_t option_value[2];
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int nb_options = 0;
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/* check if a session already exists and if so terminate it */
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s = tftp_session_find(slirp, tp);
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@ -337,7 +341,7 @@ static void tftp_handle_rrq(Slirp *slirp, struct tftp_t *tp, int pktlen)
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return;
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}
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while (k < pktlen) {
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while (k < pktlen && nb_options < ARRAY_SIZE(option_name)) {
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const char *key, *value;
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key = &tp->x.tp_buf[k];
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@ -364,12 +368,32 @@ static void tftp_handle_rrq(Slirp *slirp, struct tftp_t *tp, int pktlen)
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}
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}
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tftp_send_oack(spt, "tsize", tsize, tp);
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return;
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option_name[nb_options] = "tsize";
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option_value[nb_options] = tsize;
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nb_options++;
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} else if (strcasecmp(key, "blksize") == 0) {
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int blksize = atoi(value);
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/* If blksize option is bigger than what we will
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* emit, accept the option with our packet size.
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* Otherwise, simply do as we didn't see the option.
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*/
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if (blksize >= 512) {
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option_name[nb_options] = "blksize";
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option_value[nb_options] = 512;
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nb_options++;
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}
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}
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}
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tftp_send_data(spt, 1, tp);
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if (nb_options > 0) {
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assert(nb_options <= ARRAY_SIZE(option_name));
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tftp_send_oack(spt, option_name, option_value, nb_options, tp);
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return;
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}
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spt->block_nr = 0;
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tftp_send_next_block(spt, tp);
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}
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static void tftp_handle_ack(Slirp *slirp, struct tftp_t *tp, int pktlen)
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@ -382,11 +406,7 @@ static void tftp_handle_ack(Slirp *slirp, struct tftp_t *tp, int pktlen)
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return;
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}
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if (tftp_send_data(&slirp->tftp_sessions[s],
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ntohs(tp->x.tp_data.tp_block_nr) + 1,
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tp) < 0) {
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return;
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}
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tftp_send_next_block(&slirp->tftp_sessions[s], tp);
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}
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static void tftp_handle_error(Slirp *slirp, struct tftp_t *tp, int pktlen)
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@ -33,9 +33,11 @@ struct tftp_t {
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struct tftp_session {
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Slirp *slirp;
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char *filename;
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int fd;
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struct in_addr client_ip;
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uint16_t client_port;
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uint32_t block_nr;
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int timestamp;
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};
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