forked from mirror/openwrt
0535d615f6
When lots of events are waiting to be received, the default buffer size is not enough, and hostapd can run into "No buffer space available" on recvmsg. This will cause the netdev state tracking to go out of sync. Signed-off-by: Felix Fietkau <nbd@nbd.name>
31 lines
984 B
Diff
31 lines
984 B
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Sat, 18 Oct 2025 21:55:44 +0200
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Subject: [PATCH] netlink: increase buffer size
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When lots of events are waiting to be received, the default buffer size
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is not enough, and hostapd can run into "No buffer space available" on
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recvmsg. This will cause the netdev state tracking to go out of sync.
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/src/drivers/netlink.c
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+++ b/src/drivers/netlink.c
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@@ -92,6 +92,7 @@ struct netlink_data * netlink_init(struc
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{
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struct netlink_data *netlink;
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struct sockaddr_nl local;
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+ int size = 262144;
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netlink = os_zalloc(sizeof(*netlink));
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if (netlink == NULL)
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@@ -105,6 +106,9 @@ struct netlink_data * netlink_init(struc
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return NULL;
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}
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+ setsockopt(netlink->sock, SOL_SOCKET, SO_RCVBUF, &size, sizeof(size));
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+ setsockopt(netlink->sock, SOL_SOCKET, SO_SNDBUF, &size, sizeof(size));
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+
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os_memset(&local, 0, sizeof(local));
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local.nl_family = AF_NETLINK;
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local.nl_groups = RTMGRP_LINK;
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