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bgpd: improve socket read performance

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Use the new ringbuffer API function to read file descriptors directly
to the ringbuffer instead of using intermediary buffers.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
This commit is contained in:
Rafael Zalamena 2021-03-05 18:15:15 -03:00
parent d9d7af1a52
commit 97a16e6481
1 changed files with 1 additions and 7 deletions
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8
bgpd/bgp_io.c
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@ -451,13 +451,10 @@ done : {
*/
static uint16_t bgp_read(struct peer *peer)
{
size_t readsize; // how many bytes we want to read
ssize_t nbytes; // how many bytes we actually read
uint16_t status = 0;
uint8_t ibw[peer->max_packet_size * BGP_READ_PACKET_MAX];
readsize = MIN(ringbuf_space(peer->ibuf_work), sizeof(ibw));
nbytes = read(peer->fd, ibw, readsize);
nbytes = ringbuf_read(peer->ibuf_work, peer->fd);
/* EAGAIN or EWOULDBLOCK; come back later */
if (nbytes < 0 && ERRNO_IO_RETRY(errno)) {
@ -500,9 +497,6 @@ static uint16_t bgp_read(struct peer *peer)
BGP_EVENT_ADD(peer, TCP_connection_closed);
SET_FLAG(status, BGP_IO_FATAL_ERR);
} else {
assert(ringbuf_put(peer->ibuf_work, ibw, nbytes)
== (size_t)nbytes);
}
return status;