50303534ce
With clat ebpf offload of the receive path on 4.9+ P+ devices this just doesn't matter any more. Additionally: - this is *much* simpler, - reduces memory consumption, - eliminates the need for memory locking privs, - and allows us to increment max supported packet size, which fixes a long outstanding terrible bug wrt. GRO'ed packets being oversize and simply dropped. So, win, win, win. Test: git grep '(^|[^t])ring[.][ch]' git grep 'TP_FRAME_SIZE|TP_BLOCK_SIZE|TP_FRAMES|TP_FRAME_GAP|TP_NUM_BLOCKS|packet_ring|ring_create|ring_read' come up empty Verified ipv4 ping works on a flame device on an ipv6 only wireless network. Bug: 130253220 Test: atest clatd_test netd_integration_test Signed-off-by: Maciej Żenczykowski <maze@google.com> Change-Id: I676dfd16ffd2961f14a4e8fcd707c6f9f484e024
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
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* Copyright 2011 Daniel Drown
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* config.h - configuration settings
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*/
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#ifndef __CONFIG_H__
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#define __CONFIG_H__
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#include <linux/if.h>
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#include <netinet/in.h>
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struct tun_data {
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char device4[IFNAMSIZ];
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int read_fd6, write_fd6, fd4;
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};
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struct clat_config {
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struct in6_addr ipv6_local_subnet;
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struct in_addr ipv4_local_subnet;
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struct in6_addr plat_subnet;
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const char *native_ipv6_interface;
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};
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extern struct clat_config Global_Clatd_Config;
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/* function: ipv6_prefix_equal
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* compares the /64 prefixes of two ipv6 addresses.
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* a1 - first address
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* a2 - second address
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* returns: 0 if the subnets are different, 1 if they are the same.
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*/
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static inline int ipv6_prefix_equal(struct in6_addr *a1, struct in6_addr *a2) {
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return !memcmp(a1, a2, 8);
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}
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#endif /* __CONFIG_H__ */
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