kernel/net/ipv4/ip_vti.c, branch linux-6.2.y

ipv4: tunnels: use DEV_STATS_INC()

2022-11-16T12:48:44Z

Most of code paths in tunnels are lockless (eg NETIF_F_LLTX in tx). Adopt SMP safe DEV_STATS_INC() to update dev->stats fields. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller

ip: use dev_addr_set() in tunnels

2021-10-13T16:41:37Z

Use dev_addr_set() instead of writing to netdev->dev_addr directly in ip tunnels drivers. Signed-off-by: Jakub Kicinski

ip_tunnel: use ndo_siocdevprivate

2021-07-27T19:11:44Z

The various ipv4 and ipv6 tunnel drivers each implement a set of 12 SIOCDEVPRIVATE commands for managing tunnels. These all work correctly in compat mode. Move them over to the new .ndo_siocdevprivate operation. Cc: Hideaki YOSHIFUJI Cc: David Ahern Cc: Steffen Klassert Cc: Herbert Xu Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller

ipv4: Fix fall-through warnings for Clang

2021-05-18T00:29:10Z

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple warnings by explicitly adding multiple break statements instead of just letting the code fall through to the next case. Link: https://github.com/KSPP/linux/issues/115 Signed-off-by: Gustavo A. R. Silva

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

2021-03-31T21:37:51Z

Steffen Klassert says: ==================== pull request (net): ipsec 2021-03-31 1) Fix ipv4 pmtu checks for xfrm anf vti interfaces. From Eyal Birger. 2) There are situations where the socket passed to xfrm_output_resume() is not the same as the one attached to the skb. Use the socket passed to xfrm_output_resume() to avoid lookup failures when xfrm is used with VRFs. From Evan Nimmo. 3) Make the xfrm_state_hash_generation sequence counter per network namespace because but its write serialization lock is also per network namespace. Write protection is insufficient otherwise. From Ahmed S. Darwish. 4) Fixup sctp featue flags when used with esp offload. From Xin Long. 5) xfrm BEET mode doesn't support fragments for inner packets. This is a limitation of the protocol, so no fix possible. Warn at least to notify the user about that situation. From Xin Long. 6) Fix NULL pointer dereference on policy lookup when namespaces are uses in combination with esp offload. 7) Fix incorrect transformation on esp offload when packets get segmented at layer 3. 8) Fix some user triggered usages of WARN_ONCE in the xfrm compat layer. From Dmitry Safonov. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller

vti: fix ipv4 pmtu check to honor ip header df

2021-03-03T06:36:02Z

Frag needed should only be sent if the header enables DF. This fix allows packets larger than MTU to pass the vti interface and be fragmented after encapsulation, aligning behavior with non-vti xfrm. Fixes: d6af1a31cc72 ("vti: Add pmtu handling to vti_xmit.") Signed-off-by: Eyal Birger Reviewed-by: Sabrina Dubroca Signed-off-by: Steffen Klassert

net: always use icmp{,v6}_ndo_send from ndo_start_xmit

2021-03-01T21:11:35Z

There were a few remaining tunnel drivers that didn't receive the prior conversion to icmp{,v6}_ndo_send. Knowing now that this could lead to memory corrution (see ee576c47db60 ("net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending") for details), there's even more imperative to have these all converted. So this commit goes through the remaining cases that I could find and does a boring translation to the ndo variety. The Fixes: line below is the merge that originally added icmp{,v6}_ ndo_send and converted the first batch of icmp{,v6}_send users. The rationale then for the change applies equally to this patch. It's just that these drivers were left out of the initial conversion because these network devices are hiding in net/ rather than in drivers/net/. Cc: Florian Westphal Cc: Willem de Bruijn Cc: David S. Miller Cc: Hideaki YOSHIFUJI Cc: David Ahern Cc: Jakub Kicinski Cc: Steffen Klassert Fixes: 803381f9f117 ("Merge branch 'icmp-account-for-NAT-when-sending-icmps-from-ndo-layer'") Signed-off-by: Jason A. Donenfeld Acked-by: Willem de Bruijn Signed-off-by: David S. Miller

vti: switch to dev_get_tstats64

2020-11-10T01:50:28Z

Replace ip_tunnel_get_stats64() with the new identical core function dev_get_tstats64(). Signed-off-by: Heiner Kallweit Signed-off-by: Jakub Kicinski

ipv4: use dev_sw_netstats_rx_add()

2020-10-06T13:23:21Z

use new helper for netstats settings Signed-off-by: Fabian Frederick Signed-off-by: David S. Miller

ip_vti: Fix unused variable warning

2020-08-08T06:17:22Z

If CONFIG_INET_XFRM_TUNNEL is set but CONFIG_IPV6 is n, net/ipv4/ip_vti.c:493:27: warning: 'vti_ipip6_handler' defined but not used [-Wunused-variable] Signed-off-by: YueHaibing Signed-off-by: Steffen Klassert