From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/net/core/tso.c | 52 +++++++++++++++++++++++++++++++---------------------
1 files changed, 31 insertions(+), 21 deletions(-)
diff --git a/kernel/net/core/tso.c b/kernel/net/core/tso.c
index 43f4eba..4148f6d 100644
--- a/kernel/net/core/tso.c
+++ b/kernel/net/core/tso.c
@@ -6,18 +6,17 @@
#include <asm/unaligned.h>
/* Calculate expected number of TX descriptors */
-int tso_count_descs(struct sk_buff *skb)
+int tso_count_descs(const struct sk_buff *skb)
{
/* The Marvell Way */
return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags;
}
EXPORT_SYMBOL(tso_count_descs);
-void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso,
+void tso_build_hdr(const struct sk_buff *skb, char *hdr, struct tso_t *tso,
int size, bool is_last)
{
- struct tcphdr *tcph;
- int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ int hdr_len = skb_transport_offset(skb) + tso->tlen;
int mac_hdr_len = skb_network_offset(skb);
memcpy(hdr, skb->data, hdr_len);
@@ -30,23 +29,31 @@
} else {
struct ipv6hdr *iph = (void *)(hdr + mac_hdr_len);
- iph->payload_len = htons(size + tcp_hdrlen(skb));
+ iph->payload_len = htons(size + tso->tlen);
}
- tcph = (struct tcphdr *)(hdr + skb_transport_offset(skb));
- put_unaligned_be32(tso->tcp_seq, &tcph->seq);
+ hdr += skb_transport_offset(skb);
+ if (tso->tlen != sizeof(struct udphdr)) {
+ struct tcphdr *tcph = (struct tcphdr *)hdr;
- if (!is_last) {
- /* Clear all special flags for not last packet */
- tcph->psh = 0;
- tcph->fin = 0;
- tcph->rst = 0;
+ put_unaligned_be32(tso->tcp_seq, &tcph->seq);
+
+ if (!is_last) {
+ /* Clear all special flags for not last packet */
+ tcph->psh = 0;
+ tcph->fin = 0;
+ tcph->rst = 0;
+ }
+ } else {
+ struct udphdr *uh = (struct udphdr *)hdr;
+
+ uh->len = htons(sizeof(*uh) + size);
}
}
EXPORT_SYMBOL(tso_build_hdr);
-void tso_build_data(struct sk_buff *skb, struct tso_t *tso, int size)
+void tso_build_data(const struct sk_buff *skb, struct tso_t *tso, int size)
{
- tso->tcp_seq += size;
+ tso->tcp_seq += size; /* not worth avoiding this operation for UDP */
tso->size -= size;
tso->data += size;
@@ -55,19 +62,21 @@
skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx];
/* Move to next segment */
- tso->size = frag->size;
- tso->data = page_address(frag->page.p) + frag->page_offset;
+ tso->size = skb_frag_size(frag);
+ tso->data = skb_frag_address(frag);
tso->next_frag_idx++;
}
}
EXPORT_SYMBOL(tso_build_data);
-void tso_start(struct sk_buff *skb, struct tso_t *tso)
+int tso_start(struct sk_buff *skb, struct tso_t *tso)
{
- int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ int tlen = skb_is_gso_tcp(skb) ? tcp_hdrlen(skb) : sizeof(struct udphdr);
+ int hdr_len = skb_transport_offset(skb) + tlen;
+ tso->tlen = tlen;
tso->ip_id = ntohs(ip_hdr(skb)->id);
- tso->tcp_seq = ntohl(tcp_hdr(skb)->seq);
+ tso->tcp_seq = (tlen != sizeof(struct udphdr)) ? ntohl(tcp_hdr(skb)->seq) : 0;
tso->next_frag_idx = 0;
tso->ipv6 = vlan_get_protocol(skb) == htons(ETH_P_IPV6);
@@ -79,9 +88,10 @@
skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx];
/* Move to next segment */
- tso->size = frag->size;
- tso->data = page_address(frag->page.p) + frag->page_offset;
+ tso->size = skb_frag_size(frag);
+ tso->data = skb_frag_address(frag);
tso->next_frag_idx++;
}
+ return hdr_len;
}
EXPORT_SYMBOL(tso_start);
--
Gitblit v1.6.2