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authorStefano Brivio <sbrivio@redhat.com>2021-04-30 14:52:18 +0200
committerStefano Brivio <sbrivio@redhat.com>2021-04-30 14:52:18 +0200
commite07f539ae0aa3ad623c4e8afcaca26906fd1eb17 (patch)
tree869fc954471b65f6659ca87d9068fd9143e87674 /tcp.c
parent605af213c5e0fa047f6d8caef5bcef61a0987c8d (diff)
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udp, passt: Introduce socket packet buffer, avoid getsockname() for UDP
This is in preparation for scatter-gather IO on the UDP receive path: save a getsockname() syscall by setting a flag if we get the numbering of all bound sockets in a strict sequence (expected, in practice) and repurpose the tap buffer to be also a socket receive buffer, passing it down to protocol handlers. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Diffstat (limited to 'tcp.c')
-rw-r--r--tcp.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/tcp.c b/tcp.c
index df9508c..3c92d37 100644
--- a/tcp.c
+++ b/tcp.c
@@ -1402,14 +1402,17 @@ static void tcp_connect_finish(struct ctx *c, int s)
* @c: Execution context
* @s: File descriptor number for socket
* @events: epoll events bitmap
+ * @pkt_buf: Buffer to receive packets, currently unused
* @now: Current timestamp
*/
-void tcp_sock_handler(struct ctx *c, int s, uint32_t events,
+void tcp_sock_handler(struct ctx *c, int s, uint32_t events, char *pkt_buf,
struct timespec *now)
{
socklen_t sl;
int accept;
+ (void)pkt_buf;
+
if (tc[s].s == LAST_ACK) {
tcp_send_to_tap(c, s, ACK, NULL, 0);
tcp_close_and_epoll_del(c, s);