kernel/linux.git/drivers/net/bareudp.c, branch v5.19

bareudp: use ipv6_mod_enabled to check if IPv6 enabled

2022-03-17T02:16:57+00:00

bareudp_create_sock() use AF_INET6 by default if IPv6 CONFIG enabled. But if user start kernel with ipv6.disable=1, the bareudp sock will created failed, which cause the interface open failed even with ethertype ip. e.g. # ip link add bareudp1 type bareudp dstport 2 ethertype ip # ip link set bareudp1 up RTNETLINK answers: Address family not supported by protocol Fix it by using ipv6_mod_enabled() to check if IPv6 enabled. There is no need to check IS_ENABLED(CONFIG_IPV6) as ipv6_mod_enabled() will return false when CONFIG_IPV6 no enabled in include/linux/ipv6.h. Reported-by: Jianlin Shi Fixes: 571912c69f0e ("net: UDP tunnel encapsulation module for tunnelling different protocols like MPLS, IP, NSH etc.") Signed-off-by: Hangbin Liu Link: https://lore.kernel.org/r/20220315062618.156230-1-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski

bareudp: Add extack support to bareudp_configure()

2021-12-14T12:39:17+00:00

Add missing extacks for common configuration errors. Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller

bareudp: Move definition of struct bareudp_conf to bareudp.c

2021-12-13T12:34:09+00:00

This structure is used only in bareudp.c. While there, adjust include files: we need netdevice.h, not skbuff.h. Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller

bareudp: Remove bareudp_dev_create()

2021-12-13T12:34:09+00:00

There's no user for this function. Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller

net: bareudp: fix duplicate checks of data[] expressions

2021-10-29T12:41:28+00:00

Both !data[IFLA_BAREUDP_PORT] and !data[IFLA_BAREUDP_ETHERTYPE] are checked. We should remove the checks of data[IFLA_BAREUDP_PORT] and data[IFLA_BAREUDP_ETHERTYPE] that follow since they are always true. Put both statements together in group and balance the space on both sides of '=' sign. Signed-off-by: Jean Sacren Signed-off-by: David S. Miller

bareudp: Fix invalid read beyond skb's linear data

2021-08-09T22:37:43+00:00

Data beyond the UDP header might not be part of the skb's linear data. Use skb_copy_bits() instead of direct access to skb->data+X, so that we read the correct bytes even on a fragmented skb. Fixes: 4b5f67232d95 ("net: Special handling for IP & MPLS.") Signed-off-by: Guillaume Nault Link: https://lore.kernel.org/r/7741c46545c6ef02e70c80a9b32814b22d9616b3.1628264975.git.gnault@redhat.com Signed-off-by: Jakub Kicinski

bareudp: allow redirecting bareudp packets to eth devices

2021-06-28T19:44:17+00:00

Even though bareudp transports L3 data (typically IP or MPLS), it needs to reset the mac_header pointer, so that other parts of the stack don't mistakenly access the outer header after the packet has been decapsulated. This allows to push an Ethernet header to bareudp packets and redirect them to an Ethernet device: $ tc filter add dev bareudp0 ingress matchall \ action vlan push_eth dst_mac 00:00:5e:00:53:01 \ src_mac 00:00:5e:00:53:00 \ action mirred egress redirect dev eth0 Without this patch, push_eth refuses to add an ethernet header because the skb appears to already have a MAC header. Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller

bareudp: allow UDP L4 GRO passthrou

2021-03-31T00:06:50+00:00

Similar to the previous commit, let even geneve passthrou the L4 GRO packets Signed-off-by: Paolo Abeni Signed-off-by: David S. Miller

udp: call udp_encap_enable for v6 sockets when enabling encap

2021-02-05T02:37:14+00:00

When enabling encap for a ipv6 socket without udp_encap_needed_key increased, UDP GRO won't work for v4 mapped v6 address packets as sk will be NULL in udp4_gro_receive(). This patch is to enable it by increasing udp_encap_needed_key for v6 sockets in udp_tunnel_encap_enable(), and correspondingly decrease udp_encap_needed_key in udpv6_destroy_sock(). v1->v2: - add udp_encap_disable() and export it. v2->v3: - add the change for rxrpc and bareudp into one patch, as Alex suggested. v3->v4: - move rxrpc part to another patch. Acked-by: Willem de Bruijn Signed-off-by: Xin Long Signed-off-by: Jakub Kicinski

bareudp: add NETIF_F_FRAGLIST flag for dev features

2021-01-19T03:57:02+00:00

Like vxlan and geneve, bareudp also needs this dev feature to support some protocol's HW GSO. Signed-off-by: Xin Long Signed-off-by: Jakub Kicinski