path: root/net/ipv4/udp.c
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authorDaniel Borkmann <daniel@iogearbox.net>2018-03-30 22:50:16 +0200
committerDaniel Borkmann <daniel@iogearbox.net>2018-03-30 22:50:17 +0200
commit807ae7daf5fb9ba9ef688344ae7c0d8cbebd211c (patch)
tree630eb9ec8764b825abe20e0457df291dd0c1f9eb /net/ipv4/udp.c
parentMerge branch 'bpf-sockmap-ingress' (diff)
parentbpf: sockmap: initialize sg table entries properly (diff)
Merge branch 'bpf-sockmap-sg-api-fixes'
Prashant Bhole says: ==================== These patches fix sg api usage in sockmap. Previously sockmap didn't use sg_init_table(), which caused hitting BUG_ON in sg api, when CONFIG_DEBUG_SG is enabled v1: added sg_init_table() calls wherever needed. v2: - Patch1 adds new helper function in sg api. sg_init_marker() - Patch2 sg_init_marker() and sg_init_table() in appropriate places Backgroud: While reviewing v1, John Fastabend raised a valid point about unnecessary memset in sg_init_table() because sockmap uses sg table which embedded in a struct. As enclosing struct is zeroed out, there is unnecessary memset in sg_init_table. So Daniel Borkmann suggested to define another static inline function in scatterlist.h which only initializes sg_magic. Also this function will be called from sg_init_table. From this suggestion I defined a function sg_init_marker() which sets sg_magic and calls sg_mark_end() ==================== Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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