Commit 46dd90fe authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by Jakub Kicinski
Browse files

nfp: Use static_assert() to check struct sizes 



Commit d88cabfd ("nfp: Avoid -Wflex-array-member-not-at-end
warnings") introduced tagged `struct nfp_dump_tl_hdr`. We want
to ensure that when new members need to be added to the flexible
structure, they are always included within this tagged struct.

So, we use `static_assert()` to ensure that the memory layout for
both the flexible structure and the tagged struct is the same after
any changes.

Signed-off-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://patch.msgid.link/ZrVB43Hen0H5WQFP@cute


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent e2d0fadd

drivers/net/ethernet/netronome/nfp/nfp_net_debugdump.c

+2 −0
Original line number Diff line number Diff line
@@ -41,6 +41,8 @@ struct nfp_dump_tl { 
	);

	char data[];

};

static_assert(offsetof(struct nfp_dump_tl, data) == sizeof(struct nfp_dump_tl_hdr),

	      "struct member likely outside of struct_group_tagged()");



/* NFP CPP parameters */

struct nfp_dumpspec_cpp_isl_id {