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net: add per_cpu_fw_alloc field to struct proto

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Each protocol having a ->memory_allocated pointer gets a corresponding
per-cpu reserve, that following patches will use.

Instead of having reserved bytes per socket,
we want to have per-cpu reserves.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet
2022-06-08 23:34:08 -07:00
committed by Jakub Kicinski
parent 100fdd1faf
commit 0defbb0af7
14 changed files with 43 additions and 0 deletions
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4
net/ipv4/udp.c
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@ -125,6 +125,8 @@ EXPORT_SYMBOL(sysctl_udp_mem);
atomic_long_t udp_memory_allocated ____cacheline_aligned_in_smp;
EXPORT_SYMBOL(udp_memory_allocated);
DEFINE_PER_CPU(int, udp_memory_per_cpu_fw_alloc);
EXPORT_PER_CPU_SYMBOL_GPL(udp_memory_per_cpu_fw_alloc);
#define MAX_UDP_PORTS 65536
#define PORTS_PER_CHAIN (MAX_UDP_PORTS / UDP_HTABLE_SIZE_MIN)
@ -2946,6 +2948,8 @@ struct proto udp_prot = {
.psock_update_sk_prot = udp_bpf_update_proto,
#endif
.memory_allocated = &udp_memory_allocated,
.per_cpu_fw_alloc = &udp_memory_per_cpu_fw_alloc,
.sysctl_mem = sysctl_udp_mem,
.sysctl_wmem_offset = offsetof(struct net, ipv4.sysctl_udp_wmem_min),
.sysctl_rmem_offset = offsetof(struct net, ipv4.sysctl_udp_rmem_min),