mirror of
https://github.com/torvalds/linux
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3e67f106f6
Some users are willing to provision huge amounts of memory to be able to perform reassembly reasonnably well under pressure. Current memory tracking is using one atomic_t and integers. Switch to atomic_long_t so that 64bit arches can use more than 2GB, without any cost for 32bit arches. Note that this patch avoids an overflow error, if high_thresh was set to ~2GB, since this test in inet_frag_alloc() was never true : if (... || frag_mem_limit(nf) > nf->high_thresh) Tested: $ echo 16000000000 >/proc/sys/net/ipv4/ipfrag_high_thresh <frag DDOS> $ grep FRAG /proc/net/sockstat FRAG: inuse 14705885 memory 16000002880 $ nstat -n ; sleep 1 ; nstat | grep Reas IpReasmReqds 3317150 0.0 IpReasmFails 3317112 0.0 Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| 6lowpan | ||
| core.c | ||
| core.h | ||
| header_ops.c | ||
| ieee802154.h | ||
| Kconfig | ||
| Makefile | ||
| netlink.c | ||
| nl-mac.c | ||
| nl-phy.c | ||
| nl802154.c | ||
| nl802154.h | ||
| nl_policy.c | ||
| rdev-ops.h | ||
| socket.c | ||
| sysfs.c | ||
| sysfs.h | ||
| trace.c | ||
| trace.h | ||