From 9ed7517b1a632dd3502107dce5ad8403604df462 Mon Sep 17 00:00:00 2001 From: vivek Date: Fri, 20 Apr 2018 08:40:42 -0700 Subject: [PATCH] zebra: Increase recvmsg buffer size for picking up netlink messages Netlink messages from the kernel need to be received in a buffer larger than 8K in order to handle some types of info - for example, the VLAN information. Define a separate size for receive and set it to 32K, which is the value used by other netlink receivers like iproute2. Signed-off-by: Vivek Venkatraman Reviewed-by: Donald Sharp --- zebra/kernel_netlink.c | 2 +- zebra/kernel_netlink.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/zebra/kernel_netlink.c b/zebra/kernel_netlink.c index db4f19460a..6b587dab38 100644 --- a/zebra/kernel_netlink.c +++ b/zebra/kernel_netlink.c @@ -463,7 +463,7 @@ int netlink_parse_info(int (*filter)(struct sockaddr_nl *, struct nlmsghdr *, int read_in = 0; while (1) { - char buf[NL_PKT_BUF_SIZE]; + char buf[NL_RCV_PKT_BUF_SIZE]; struct iovec iov = {.iov_base = buf, .iov_len = sizeof buf}; struct sockaddr_nl snl; struct msghdr msg = {.msg_name = (void *)&snl, diff --git a/zebra/kernel_netlink.h b/zebra/kernel_netlink.h index 8441eeac76..dc075b9aff 100644 --- a/zebra/kernel_netlink.h +++ b/zebra/kernel_netlink.h @@ -23,6 +23,7 @@ #ifdef HAVE_NETLINK +#define NL_RCV_PKT_BUF_SIZE 32768 #define NL_PKT_BUF_SIZE 8192 extern void netlink_parse_rtattr(struct rtattr **tb, int max, -- 2.39.5