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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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1e63e5a813
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 checking 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 tc_pedit. Additionally, since the element count member must be set before accessing the annotated flexible array member, move its initialization earlier. 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: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef __LINUX_TC_PED_H
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#define __LINUX_TC_PED_H
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#include <linux/types.h>
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#include <linux/pkt_cls.h>
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enum {
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TCA_PEDIT_UNSPEC,
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TCA_PEDIT_TM,
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TCA_PEDIT_PARMS,
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TCA_PEDIT_PAD,
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TCA_PEDIT_PARMS_EX,
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TCA_PEDIT_KEYS_EX,
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TCA_PEDIT_KEY_EX,
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__TCA_PEDIT_MAX
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};
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#define TCA_PEDIT_MAX (__TCA_PEDIT_MAX - 1)
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enum {
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TCA_PEDIT_KEY_EX_HTYPE = 1,
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TCA_PEDIT_KEY_EX_CMD = 2,
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__TCA_PEDIT_KEY_EX_MAX
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};
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#define TCA_PEDIT_KEY_EX_MAX (__TCA_PEDIT_KEY_EX_MAX - 1)
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/* TCA_PEDIT_KEY_EX_HDR_TYPE_NETWROK is a special case for legacy users. It
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* means no specific header type - offset is relative to the network layer
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*/
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enum pedit_header_type {
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TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK = 0,
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TCA_PEDIT_KEY_EX_HDR_TYPE_ETH = 1,
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TCA_PEDIT_KEY_EX_HDR_TYPE_IP4 = 2,
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TCA_PEDIT_KEY_EX_HDR_TYPE_IP6 = 3,
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TCA_PEDIT_KEY_EX_HDR_TYPE_TCP = 4,
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TCA_PEDIT_KEY_EX_HDR_TYPE_UDP = 5,
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__PEDIT_HDR_TYPE_MAX,
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};
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#define TCA_PEDIT_HDR_TYPE_MAX (__PEDIT_HDR_TYPE_MAX - 1)
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enum pedit_cmd {
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TCA_PEDIT_KEY_EX_CMD_SET = 0,
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TCA_PEDIT_KEY_EX_CMD_ADD = 1,
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__PEDIT_CMD_MAX,
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};
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#define TCA_PEDIT_CMD_MAX (__PEDIT_CMD_MAX - 1)
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struct tc_pedit_key {
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__u32 mask; /* AND */
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__u32 val; /*XOR */
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__u32 off; /*offset */
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__u32 at;
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__u32 offmask;
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__u32 shift;
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};
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struct tc_pedit_sel {
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tc_gen;
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unsigned char nkeys;
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unsigned char flags;
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struct tc_pedit_key keys[] __counted_by(nkeys);
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};
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#define tc_pedit tc_pedit_sel
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#endif
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