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netconsole: move push_udp() from netpoll

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push_udp() builds the UDP header (and triggers the checksum) for
netconsole's UDP packets. Move it into drivers/net/netconsole.c as
a file-static helper; drop its EXPORT_SYMBOL_GPL and remove the
prototype from include/linux/netpoll.h.

Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260512-netconsole_split-v2-6-1191d14ad66d@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Breno Leitao 2026-05-12 03:46:39 -07:00 committed by Jakub Kicinski
parent 6a44c82a48
commit df82899714
3 changed files with 18 additions and 20 deletions
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18
drivers/net/netconsole.c
View File

@ -1652,6 +1652,24 @@ static struct notifier_block netconsole_netdev_notifier = {
.notifier_call = netconsole_netdev_event,
};
static void push_udp(struct netpoll *np, struct sk_buff *skb, int len)
{
struct udphdr *udph;
int udp_len;
udp_len = len + sizeof(struct udphdr);
skb_push(skb, sizeof(struct udphdr));
skb_reset_transport_header(skb);
udph = udp_hdr(skb);
udph->source = htons(np->local_port);
udph->dest = htons(np->remote_port);
udph->len = htons(udp_len);
netpoll_udp_checksum(np, skb, len);
}
static void push_eth(struct netpoll *np, struct sk_buff *skb)
{
struct ethhdr *eth;

1
include/linux/netpoll.h
View File

@ -75,7 +75,6 @@ void do_netpoll_cleanup(struct netpoll *np);
netdev_tx_t netpoll_send_skb(struct netpoll *np, struct sk_buff *skb);
struct sk_buff *find_skb(struct netpoll *np, int len, int reserve);
void netpoll_udp_checksum(struct netpoll *np, struct sk_buff *skb, int len);
void push_udp(struct netpoll *np, struct sk_buff *skb, int len);
#ifdef CONFIG_NETPOLL
static inline void *netpoll_poll_lock(struct napi_struct *napi)

19
net/core/netpoll.c
View File

@ -412,25 +412,6 @@ netdev_tx_t netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
}
EXPORT_SYMBOL(netpoll_send_skb);
void push_udp(struct netpoll *np, struct sk_buff *skb, int len)
{
struct udphdr *udph;
int udp_len;
udp_len = len + sizeof(struct udphdr);
skb_push(skb, sizeof(struct udphdr));
skb_reset_transport_header(skb);
udph = udp_hdr(skb);
udph->source = htons(np->local_port);
udph->dest = htons(np->remote_port);
udph->len = htons(udp_len);
netpoll_udp_checksum(np, skb, len);
}
EXPORT_SYMBOL_GPL(push_udp);
static void skb_pool_flush(struct netpoll *np)
{
struct sk_buff_head *skb_pool;