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lwip/0106-remove-unnecessary-variables-in-struct-pbuf.patch
jiangheng c312a40cbf remove unnecessary variables in struct pbuf
2024-01-24 09:32:26 +08:00

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From bb07cd2f26a91c4f5396f2e19a409e4014e7a7e8 Mon Sep 17 00:00:00 2001
From: jiangheng <jiangheng14@huawei.com>
Date: Fri, 19 Jan 2024 20:44:54 +0800
Subject: [PATCH] remove unnecessary variables in struct pbuf
---
src/core/pbuf.c | 5 ++--
src/core/tcp_out.c | 3 +-
src/core/udp.c | 4 +--
src/include/dpdk_cksum.h | 60 ++++++++++++++++++++--------------------
src/include/lwip/pbuf.h | 12 --------
src/netif/ethernet.c | 3 +-
6 files changed, 36 insertions(+), 51 deletions(-)
diff --git a/src/core/pbuf.c b/src/core/pbuf.c
index 61690ff..cb5003a 100644
--- a/src/core/pbuf.c
+++ b/src/core/pbuf.c
@@ -86,6 +86,7 @@
#endif
#if GAZELLE_ENABLE
#include <rte_prefetch.h>
+#include "dpdk_cksum.h"
#endif
#include <string.h>
@@ -1041,9 +1042,7 @@ pbuf_copy_partial_pbuf(struct pbuf *p_to, const struct pbuf *p_from, u16_t copy_
}
#if GAZELLE_ENABLE && (CHECKSUM_GEN_IP_HW || CHECKSUM_GEN_TCP_HW)
- p_to->l2_len = p_from->l2_len;
- p_to->l3_len = p_from->l3_len;
- p_to->ol_flags = p_from->ol_flags;
+ pbuf_offload_copy(p_to, p_from);
#endif
len = (u16_t)LWIP_MIN(copy_len, len_calc);
diff --git a/src/core/tcp_out.c b/src/core/tcp_out.c
index bb03aae..f5e1968 100644
--- a/src/core/tcp_out.c
+++ b/src/core/tcp_out.c
@@ -1941,7 +1941,6 @@ tcp_output_segment(struct tcp_seg *seg, struct tcp_pcb *pcb, struct netif *netif
#if CHECKSUM_GEN_TCP_HW
if (netif_get_txol_flags(netif) & RTE_ETH_TX_OFFLOAD_TCP_CKSUM) {
tcph_cksum_set(seg->p, TCPH_HDRLEN_BYTES(seg->tcphdr));
- seg->tcphdr->chksum = ip_chksum_pseudo_offload(IP_PROTO_TCP,seg->p->tot_len, &pcb->local_ip, &pcb->remote_ip);
} else {
#if TCP_CHECKSUM_ON_COPY
u32_t acc;
@@ -2388,10 +2387,10 @@ tcp_output_control_segment(struct tcp_pcb *pcb, struct pbuf *p,
#if CHECKSUM_GEN_TCP
IF__NETIF_CHECKSUM_ENABLED(netif, NETIF_CHECKSUM_GEN_TCP) {
struct tcp_hdr *tcphdr = (struct tcp_hdr *)p->payload;
+ tcphdr->chksum = 0;
#if CHECKSUM_GEN_TCP_HW
if (netif_get_txol_flags(netif) & RTE_ETH_TX_OFFLOAD_TCP_CKSUM) {
tcph_cksum_set(p, TCPH_HDRLEN_BYTES(tcphdr));
- tcphdr->chksum = ip_chksum_pseudo_offload(IP_PROTO_TCP, p->tot_len, src, dst);
} else {
tcphdr->chksum = ip_chksum_pseudo(p, IP_PROTO_TCP, p->tot_len,
src, dst);
diff --git a/src/core/udp.c b/src/core/udp.c
index 718f9f4..99bdac1 100644
--- a/src/core/udp.c
+++ b/src/core/udp.c
@@ -985,7 +985,7 @@ udp_sendto_if_src_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *d
#if CHECKSUM_GEN_UDP_HW
if (netif_get_txol_flags(netif) & RTE_ETH_TX_OFFLOAD_UDP_CKSUM) {
udph_cksum_set(q, UDP_HLEN);
- udpchksum = ip_chksum_pseudo_offload(IP_PROTO_UDP, q->tot_len, &pcb->local_ip, &pcb->remote_ip);
+ udpchksum = 0;
} else {
udpchksum = ip_chksum_pseudo(q, IP_PROTO_UDP, q->tot_len,
src_ip, dst_ip);
@@ -1019,7 +1019,7 @@ udp_sendto_if_src_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *d
/* output to IP */
NETIF_SET_HINTS(netif, &(pcb->netif_hints));
#if GAZELLE_UDP_ENABLE
- q->l4_len = UDP_HLEN;
+ PBUF_TO_MBUF(q)->l4_len = UDP_HLEN;
#endif /* GAZELLE_UDP_ENABLE */
err = ip_output_if_src(q, src_ip, dst_ip, ttl, pcb->tos, ip_proto, netif);
NETIF_RESET_HINTS(netif);
diff --git a/src/include/dpdk_cksum.h b/src/include/dpdk_cksum.h
index 38cfb96..115155d 100644
--- a/src/include/dpdk_cksum.h
+++ b/src/include/dpdk_cksum.h
@@ -45,32 +45,48 @@
#include "lwip/pbuf.h"
#endif
+#define PBUF_TO_MBUF(p) ((struct rte_mbuf *)RTE_PTR_SUB(p, sizeof(struct rte_mbuf)))
+
+static inline void pbuf_offload_copy(struct pbuf *to, const struct pbuf *from)
+{
+ PBUF_TO_MBUF(to)->l4_len = PBUF_TO_MBUF(from)->l4_len;
+ PBUF_TO_MBUF(to)->l3_len = PBUF_TO_MBUF(from)->l3_len;
+ PBUF_TO_MBUF(to)->l2_len = PBUF_TO_MBUF(from)->l2_len;
+ PBUF_TO_MBUF(to)->ol_flags = PBUF_TO_MBUF(from)->ol_flags;
+}
+
+static inline void pbuf_set_vlan(struct pbuf *p, u16_t vlan_tci)
+{
+ PBUF_TO_MBUF(p)->ol_flags |= RTE_MBUF_F_TX_VLAN;
+ PBUF_TO_MBUF(p)->vlan_tci = vlan_tci;
+}
+
#if CHECKSUM_CHECK_IP_HW
// for ip4_input
static inline u64_t is_cksum_ipbad(struct pbuf *p) {
- return p->ol_flags & (RTE_MBUF_F_RX_IP_CKSUM_BAD);
+ return PBUF_TO_MBUF(p)->ol_flags & (RTE_MBUF_F_RX_IP_CKSUM_BAD);
}
#endif /* CHECKSUM_CHECK_IP_HW */
#if (CHECKSUM_CHECK_TCP_HW || CHECKSUM_CHECK_UDP_HW)
// for tcp_input and udp_input
static inline u64_t is_cksum_bad(struct pbuf *p) {
- return p->ol_flags & (RTE_MBUF_F_RX_L4_CKSUM_BAD);
+ return PBUF_TO_MBUF(p)->ol_flags & (RTE_MBUF_F_RX_L4_CKSUM_BAD);
}
#endif /* (CHECKSUM_CHECK_TCP_HW || CHECKSUM_CHECK_UDP_HW) */
#if CHECKSUM_GEN_IP_HW
static inline void ethh_cksum_set(struct pbuf *p, u16_t len) {
- p->l2_len = len;
+ PBUF_TO_MBUF(p)->l2_len = len;
}
// replaces IPH_CHKSUM_SET
static inline void iph_cksum_set(struct pbuf *p, u16_t len, bool do_ipcksum) {
- p->ol_flags |= ((len == IP_HLEN) ? RTE_MBUF_F_TX_IPV4 : RTE_MBUF_F_TX_IPV6);
+ PBUF_TO_MBUF(p)->ol_flags |= ((len == IP_HLEN) ? RTE_MBUF_F_TX_IPV4 : RTE_MBUF_F_TX_IPV6);
if (do_ipcksum) {
- p->ol_flags |= RTE_MBUF_F_TX_IP_CKSUM;
+ PBUF_TO_MBUF(p)->ol_flags |= RTE_MBUF_F_TX_IP_CKSUM;
}
- p->l3_len = len;
+ PBUF_TO_MBUF(p)->l3_len = len;
}
#endif /* CHECKSUM_GEN_IP_HW */
@@ -80,37 +96,17 @@ static inline void iph_cksum_set(struct pbuf *p, u16_t len, bool do_ipcksum) {
#if CHECKSUM_GEN_TCP_HW
static inline void tcph_cksum_set(struct pbuf *p, u16_t len) {
- p->l4_len = len;
- p->ol_flags |= RTE_MBUF_F_TX_TCP_CKSUM;
+ PBUF_TO_MBUF(p)->l4_len = len;
+ PBUF_TO_MBUF(p)->ol_flags |= RTE_MBUF_F_TX_TCP_CKSUM;
}
#endif /* CHECKSUM_GEN_TCP_HW */
#if CHECKSUM_GEN_UDP_HW
static inline void udph_cksum_set(struct pbuf *p, u16_t len) {
- p->l4_len = len;
- p->ol_flags |= RTE_MBUF_F_TX_UDP_CKSUM;
+ PBUF_TO_MBUF(p)->l4_len = len;
+ PBUF_TO_MBUF(p)->ol_flags |= RTE_MBUF_F_TX_UDP_CKSUM;
}
#endif /* CHECKSUM_GEN_UDP_HW */
-
-static inline u16_t ip_chksum_pseudo_offload(u8_t proto, u16_t proto_len,
- const ip_addr_t *src, const ip_addr_t *dst)
-{
- struct ip_psd_header {
- ip_addr_t src_addr; /* IP address of source host. */
- ip_addr_t dst_addr; /* IP address of destination host. */
- uint8_t zero; /* zero. */
- uint8_t proto; /* L4 protocol type. */
- uint16_t len; /* L4 length. */
- } psd_hdr;
-
- ip_addr_copy(psd_hdr.src_addr, *src);
- ip_addr_copy(psd_hdr.dst_addr, *dst);
- psd_hdr.proto = proto;
- psd_hdr.len = lwip_htons(proto_len);
- psd_hdr.zero = 0;
-
- return rte_raw_cksum(&psd_hdr, sizeof(psd_hdr));
-}
#endif /* (CHECKSUM_GEN_TCP_HW || CHECKSUM_GEN_UDP_HW) */
#endif /* GAZELLE_ENABLE */
diff --git a/src/include/lwip/pbuf.h b/src/include/lwip/pbuf.h
index ffdc9fe..99a259c 100644
--- a/src/include/lwip/pbuf.h
+++ b/src/include/lwip/pbuf.h
@@ -225,22 +225,10 @@ struct pbuf {
u8_t if_idx;
#if GAZELLE_ENABLE && CHECKSUM_OFFLOAD_ALL
- /** checksum offload ol_flags */
- u64_t ol_flags;
- /* < L2 (MAC) Header Length for non-tunneling pkt. */
- u64_t l2_len:7;
- /* < L3 (IP) Header Length. */
- u64_t l3_len:9;
- /* < L4 (TCP/UDP) Header Length. */
- u64_t l4_len:8;
- u8_t header_off;
- u8_t rexmit;
volatile u8_t allow_in;
- u8_t head;
struct pbuf *last;
pthread_spinlock_t pbuf_lock;
struct tcp_pcb *pcb;
- u16_t vlan_tci;
#if GAZELLE_UDP_ENABLE
ip_addr_t addr;
u16_t port;
diff --git a/src/netif/ethernet.c b/src/netif/ethernet.c
index afd13ad..9fb9357 100644
--- a/src/netif/ethernet.c
+++ b/src/netif/ethernet.c
@@ -290,8 +290,7 @@ ethernet_output(struct netif * netif, struct pbuf * p,
#else
if (netif->vlan_enable) {
if (netif->txol_flags & RTE_ETH_TX_OFFLOAD_VLAN_INSERT) {
- p->ol_flags |= RTE_MBUF_F_TX_VLAN;
- p->vlan_tci = netif->vlan_tci;
+ pbuf_set_vlan(p, netif->vlan_tci);
} else {
vlan_prio_vid = netif->vlan_tci;
}
--
2.33.0
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