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nfp: nsp: Annotate struct nfp_eth_table with __counted_by

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Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for
array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).

As found with Coccinelle[1], add __counted_by for struct nfp_eth_table.

Cc: Simon Horman <simon.horman@corigine.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Yinjun Zhang <yinjun.zhang@corigine.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Yu Xiao <yu.xiao@corigine.com>
Cc: Sixiang Chen <sixiang.chen@corigine.com>
Cc: oss-drivers@corigine.com
Cc: netdev@vger.kernel.org
Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci [1]
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kees Cook 2023-10-03 16:18:51 -07:00 committed by David S. Miller
parent 4514aa9f56
commit 178e9bf9b5
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h
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@ -241,7 +241,7 @@ struct nfp_eth_table {
u64 link_modes_supp[2];
u64 link_modes_ad[2];
} ports[];
} ports[] __counted_by(count);
};
struct nfp_eth_table *nfp_eth_read_ports(struct nfp_cpp *cpp);