diff options
| author |   Pierre Pfister <ppfister@cisco.com> | 2017-09-20 08:48:36 +0200 |
|---|---|---|
| committer |   Dave Wallace <dwallacelf@gmail.com> | 2017-09-20 13:43:36 +0000 |
| commit | 7fe51f3e3e80ed6ffe989df1c6963527166afc25 (patch) | |
| tree | 4b007227cfb4949066901cbaca6a1158e235303a /src/vnet/tcp/tcp_input.c | |
| parent | 440751b91804947a7c9b533570531cac79629016 (diff) | |
tcp: add option to punt traffic
Until now, if the stack didn't find a connection for a packet, it sent
back a reset. With the punt option enabled, packets are now enqueued to
error-punt where they can be handed off to the host os.
Change-Id: I12dea8694b8bd24c92b0d601412928aa7b8046cb
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Pierre Pfister <ppfister@cisco.com>
Diffstat (limited to 'src/vnet/tcp/tcp_input.c')
| -rw-r--r-- | src/vnet/tcp/tcp_input.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c index 64a07070..bd57eca3 100644 --- a/src/vnet/tcp/tcp_input.c +++ b/src/vnet/tcp/tcp_input.c @@ -2869,6 +2869,7 @@ typedef enum _tcp_input_next TCP_INPUT_NEXT_SYN_SENT, TCP_INPUT_NEXT_ESTABLISHED, TCP_INPUT_NEXT_RESET, + TCP_INPUT_NEXT_PUNT, TCP_INPUT_N_NEXT } tcp_input_next_t; @@ -2878,7 +2879,8 @@ typedef enum _tcp_input_next _ (RCV_PROCESS, "tcp4-rcv-process") \ _ (SYN_SENT, "tcp4-syn-sent") \ _ (ESTABLISHED, "tcp4-established") \ - _ (RESET, "tcp4-reset") + _ (RESET, "tcp4-reset") \ + _ (PUNT, "error-punt") #define foreach_tcp6_input_next \ _ (DROP, "error-drop") \ @@ -2886,7 +2888,8 @@ typedef enum _tcp_input_next _ (RCV_PROCESS, "tcp6-rcv-process") \ _ (SYN_SENT, "tcp6-syn-sent") \ _ (ESTABLISHED, "tcp6-established") \ - _ (RESET, "tcp6-reset") + _ (RESET, "tcp6-reset") \ + _ (PUNT, "error-punt") #define filter_flags (TCP_FLAG_SYN|TCP_FLAG_ACK|TCP_FLAG_RST|TCP_FLAG_FIN) @@ -3010,9 +3013,18 @@ tcp46_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else { - /* Send reset */ - next0 = TCP_INPUT_NEXT_RESET; - error0 = TCP_ERROR_NO_LISTENER; + if ((is_ip4 && tm->punt_unknown4) || + (!is_ip4 && tm->punt_unknown6)) + { + next0 = TCP_INPUT_NEXT_PUNT; + error0 = TCP_ERROR_PUNT; + } + else + { + /* Send reset */ + next0 = TCP_INPUT_NEXT_RESET; + error0 = TCP_ERROR_NO_LISTENER; + } } done: |