diff options
Diffstat (limited to 'tcp.c')
| -rw-r--r-- | tcp.c | 9 |
1 files changed, 8 insertions, 1 deletions
@@ -359,6 +359,11 @@ sizeof(struct ipv6hdr) - sizeof(struct tcphdr)) #define WINDOW_DEFAULT 14600 /* RFC 6928 */ +#ifdef HAS_SND_WND +# define KERNEL_REPORTS_SND_WND(c) (c->tcp.kernel_snd_wnd) +#else +# define KERNEL_REPORTS_SND_WND(c) (0 && (c)) +#endif #define SYN_TIMEOUT 240000 /* ms */ #define ACK_TIMEOUT 2000 @@ -1563,7 +1568,7 @@ static int tcp_update_seqack_wnd(struct ctx *c, struct tcp_tap_conn *conn, conn->seq_ack_to_tap = prev_ack_to_tap; } - if (!c->tcp.kernel_snd_wnd) { + if (!KERNEL_REPORTS_SND_WND(c)) { tcp_get_sndbuf(conn); conn->wnd_to_tap = MIN(conn->snd_buf, MAX_WINDOW); goto out; @@ -1675,8 +1680,10 @@ static int tcp_send_to_tap(struct ctx *c, struct tcp_tap_conn *conn, int flags, data += OPT_MSS_LEN - 2; th->doff += OPT_MSS_LEN / 4; +#ifdef HAS_SND_WND if (!c->tcp.kernel_snd_wnd && info.tcpi_snd_wnd) c->tcp.kernel_snd_wnd = 1; +#endif conn->ws = MIN(MAX_WS, info.tcpi_snd_wscale); |