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39d3628f7c
linux/net
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Ido Schimmel 39d3628f7c ipv4: Unmask upper DSCP bits in fib_compute_spec_dst() 
As explained in commit 35ebf65e85 ("ipv4: Create and use
fib_compute_spec_dst() helper."), the function is used - for example -
to determine the source address for an ICMP reply. If we are responding
to a multicast or broadcast packet, the source address is set to the
source address that we would use if we were to send a packet to the
unicast source of the original packet. This address is determined by
performing a FIB lookup and using the preferred source address of the
resulting route.

Unmask the upper DSCP bits of the DS field of the packet that triggered
the reply so that in the future the FIB lookup could be performed
according to the full DSCP value.

No functional changes intended since the upper DSCP bits are masked when
comparing against the TOS selectors in FIB rules and routes.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Acked-by: Florian Westphal <fw@strlen.de>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20240821125251.1571445-8-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-08-22 16:59:57 -07:00
..
6lowpan ipv6: eliminate ndisc_ops_is_useropt() 2024-08-12 17:23:57 -07:00
9p Two fixes headed to stable trees: 2024-05-29 09:25:15 -07:00
802
8021q net: Add struct kernel_ethtool_ts_info 2024-07-15 08:02:26 -07:00
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-05-09 10:01:01 -07:00
atm atm: clean up a put_user() calls 2024-06-14 19:08:50 -07:00
ax25 ax25: Replace kfree() in ax25_dev_free() with ax25_dev_put() 2024-06-01 15:49:42 -07:00
batman-adv Revert "batman-adv: prefer kfree_rcu() over call_rcu() with free-only callbacks" 2024-06-12 20:18:00 +02:00
bluetooth Bluetooth: hci_sync: avoid dup filtering when passive scanning with adv monitor 2024-08-07 16:36:01 -04:00
bpf bpf-next-for-netdev 2024-07-09 17:01:46 +02:00
bridge netfilter: nf_queue: drop packets with cloned unconfirmed conntracks 2024-08-14 23:37:23 +02:00
caif net: caif: remove unused structs 2024-06-05 10:18:06 +01:00
can Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-06-27 12:14:11 -07:00
ceph libceph: fix crush_choose_firstn() kernel-doc warnings 2024-07-11 16:33:07 +02:00
core bpf: Unmask upper DSCP bits in bpf_fib_lookup() helper 2024-08-22 16:59:56 -07:00
dcb
dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-06-27 12:14:11 -07:00
devlink devlink: Constify the 'table_ops' parameter of devl_dpipe_table_register() 2024-06-05 10:24:57 +01:00
dns_resolver
dsa net: dsa: microchip: fix tag_ksz egress mask for KSZ8795 family 2024-08-16 10:25:02 -07:00
ethernet netkit: Fix pkt_type override upon netkit pass verdict 2024-05-25 10:48:57 -07:00
ethtool Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-08-15 17:18:52 -07:00
handshake net/handshake: remove redundant assignment to variable ret 2024-04-16 17:14:55 -07:00
hsr net: hsr: cosmetic: Remove extra white space 2024-06-19 17:32:57 -07:00
ieee802154 bpf-next-for-netdev 2024-05-28 07:27:29 -07:00
ife
ipv4 ipv4: Unmask upper DSCP bits in fib_compute_spec_dst() 2024-08-22 16:59:57 -07:00
ipv6 net: ipv6: ioam6: new feature tunsrc 2024-08-22 10:45:12 +02:00
iucv net/iucv: fix use after free in iucv_sock_close() 2024-07-30 15:01:50 +02:00
kcm
key
l2tp l2tp: use skb_queue_purge in l2tp_ip_destroy_sock 2024-08-20 16:52:28 -07:00
l3mdev
lapb
llc llc: Constify struct llc_sap_state_trans 2024-07-15 08:51:19 -07:00
mac80211 wifi: mac80211: use monitor sdata with driver only if desired 2024-07-26 12:30:49 +02:00
mac802154 net: mac802154: Fix racy device stats updates by DEV_STATS_INC() and DEV_STATS_ADD() 2024-06-03 11:20:56 +02:00
mctp net: mctp: Consistent peer address handling in ioctl tag allocation 2024-08-01 18:04:12 -07:00
mpls mpls: Reduce skb re-allocations due to skb_cow() 2024-08-16 17:53:49 -07:00
mptcp mptcp: Remove unused declaration mptcp_sockopt_sync() 2024-08-19 17:49:00 -07:00
ncsi net/ncsi: Fix the multi thread manner of NCSI driver 2024-06-01 16:21:44 -07:00
netfilter netfilter: nf_tables: Add locking for NFT_MSG_GETOBJ_RESET requests 2024-08-14 23:44:55 +02:00
netlabel netlabel: fix RCU annotation for IPv4 options on socket creation 2024-05-13 14:58:12 -07:00
netlink net: netlink: remove the cb_mutex "injection" from netlink core 2024-06-10 13:15:40 +01:00
netrom netrom: Fix a memory leak in nr_heartbeat_expiry() 2024-06-17 13:06:23 +01:00
nfc Quite smaller than usual. Notably it includes the fix for the unix 2024-05-23 12:49:37 -07:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-04-26 12:20:01 +02:00
openvswitch openvswitch: switch to per-action label counting in conntrack 2024-08-15 19:05:19 -07:00
packet Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-07-15 13:19:17 -07:00
phonet sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
psample net: psample: fix flag being set in wrong skb 2024-07-11 18:11:31 -07:00
qrtr net: qrtr: ns: Ignore ENODEV failures in ns 2024-06-14 13:17:21 +02:00
rds net: rds: add option for GCOV profiling 2024-08-09 13:18:46 +01:00
rfkill net: rfkill: Correct return value in invalid parameter case 2024-06-26 10:49:01 +02:00
rose net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
rxrpc rxrpc: Remove unused function declarations 2024-08-02 17:17:34 -07:00
sched sched: act_ct: avoid -Wflex-array-member-not-at-end warning 2024-08-12 17:54:24 -07:00
sctp sctp: Fix null-ptr-deref in reuseport_add_sock(). 2024-08-02 16:25:06 -07:00
smc net/smc: introduce statistics for ringbufs usage of net namespace 2024-08-20 11:38:23 +02:00
strparser
sunrpc nfsd-6.11 fixes: 2024-08-10 10:44:21 -07:00
switchdev net: bridge: switchdev: Improve error message for port_obj_add/del functions 2024-05-08 12:19:12 +01:00
tipc tipc: guard against string buffer overrun 2024-08-02 17:16:09 -07:00
tls net: tls: Pass union tls_crypto_context pointer to memzero_explicit 2024-07-09 11:14:47 -07:00
unix af_unix: Don't call skb_get() for OOB skb. 2024-08-20 15:48:00 -07:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-08-15 17:18:52 -07:00
wireless wifi: cfg80211: correct S1G beacon length calculation 2024-07-26 12:32:47 +02:00
x25 net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
xdp xsk: Require XDP_UMEM_TX_METADATA_LEN to actuate tx_metadata_len 2024-07-25 11:57:27 +02:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-07-15 13:19:17 -07:00
compat.c
devres.c
Kconfig ethtool: provide customized dim profile management 2024-06-25 17:15:06 -07:00
Kconfig.debug
Makefile
socket.c net: Split a __sys_listen helper for io_uring 2024-06-19 07:57:21 -06:00
sysctl_net.c sysctl: Remove check for sentinel element in ctl_table arrays 2024-06-13 10:50:52 +02:00