Mercurial > hg > dhcpcd
changeset 5007:a5d64cd4b391 draft
dhcpcd: When route socket overflows, report how large it is.
Of course Linux likes to double it, so cater for this.
| author | Roy Marples <roy@marples.name> |
|---|---|
| date | Sun, 26 Jan 2020 15:46:41 +0000 |
| parents | 8f08888b3c0f |
| children | 28209b094c6c |
| files | src/dhcpcd.c |
| diffstat | 1 files changed, 13 insertions(+), 1 deletions(-) [+] |
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--- a/src/dhcpcd.c Sun Jan 26 15:46:16 2020 +0000 +++ b/src/dhcpcd.c Sun Jan 26 15:46:41 2020 +0000 @@ -1116,11 +1116,23 @@ void dhcpcd_linkoverflow(struct dhcpcd_ctx *ctx) { + socklen_t socklen; + int rcvbuflen; struct if_head *ifaces; struct ifaddrs *ifaddrs; struct interface *ifp, *ifn, *ifp1; - logerrx("route socket overflowed - learning interface state"); + socklen = sizeof(rcvbuflen); + if (getsockopt(ctx->link_fd, SOL_SOCKET, + SO_RCVBUF, &rcvbuflen, &socklen) == -1) + rcvbuflen = 0; +#ifdef __linux__ + else + rcvbuflen /= 2; +#endif + + logerrx("route socket overflowed (rcvbuflen %d)" + " - learning interface state", rcvbuflen); /* Close the existing socket and open a new one. * This is easier than draining the kernel buffer of an