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tso_count_descs() is a small function doing simple calculation, and tso_count_descs() is used in fast path, so inline it to reduce the overhead of calls. Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Link: https://lore.kernel.org/r/20221212032426.16050-1-linyunsheng@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
31 lines
721 B
C
31 lines
721 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _TSO_H
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#define _TSO_H
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#include <linux/skbuff.h>
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#include <net/ip.h>
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#define TSO_HEADER_SIZE 256
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struct tso_t {
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int next_frag_idx;
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int size;
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void *data;
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u16 ip_id;
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u8 tlen; /* transport header len */
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bool ipv6;
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u32 tcp_seq;
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};
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/* Calculate the worst case buffer count */
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static inline int tso_count_descs(const struct sk_buff *skb)
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{
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return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags;
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}
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void tso_build_hdr(const struct sk_buff *skb, char *hdr, struct tso_t *tso,
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int size, bool is_last);
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void tso_build_data(const struct sk_buff *skb, struct tso_t *tso, int size);
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int tso_start(struct sk_buff *skb, struct tso_t *tso);
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#endif /* _TSO_H */
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