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2020-07-20icmp: support rfc 4884Willem de Bruijn7-1/+124
Add setsockopt SOL_IP/IP_RECVERR_4884 to return the offset to an extension struct if present. ICMP messages may include an extension structure after the original datagram. RFC 4884 standardized this behavior. It stores the offset in words to the extension header in u8 icmphdr.un.reserved[1]. The field is valid only for ICMP types destination unreachable, time exceeded and parameter problem, if length is at least 128 bytes and entire packet does not exceed 576 bytes. Return the offset to the start of the extension struct when reading an ICMP error from the error queue, if it matches the above constraints. Do not return the raw u8 field. Return the offset from the start of the user buffer, in bytes. The kernel does not return the network and transport headers, so subtract those. Also validate the headers. Return the offset regardless of validation, as an invalid extension must still not be misinterpreted as part of the original datagram. Note that !invalid does not imply valid. If the extension version does not match, no validation can take place, for instance. For backward compatibility, make this optional, set by setsockopt SOL_IP/IP_RECVERR_RFC4884. For API example and feature test, see github.com/wdebruij/kerneltools/blob/master/tests/recv_icmp_v2.c For forward compatibility, reserve only setsockopt value 1, leaving other bits for additional icmp extensions. Changes v1->v2: - convert word offset to byte offset from start of user buffer - return in ee_data as u8 may be insufficient - define extension struct and object header structs - return len only if constraints met - if returning len, also validate Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20Merge branch 'rework-mvneta-napi_poll-loop-for-XDP-multi-buffers'David S. Miller2-98/+138
Lorenzo Bianconi says: ==================== rework mvneta napi_poll loop for XDP multi-buffers Rework mvneta_rx_swbm routine in order to process all rx descriptors before building the skb or run the xdp program attached to the interface. Introduce xdp_get_shared_info_from_{buff,frame} utility routines to get the skb_shared_info pointer from xdp_buff or xdp_frame. This is a preliminary series to enable multi-buffers and jumbo frames for XDP according to [1] [1] https://github.com/xdp-project/xdp-project/blob/master/areas/core/xdp-multi-buffer01-design.org Changes since v1: - rely on skb_frag_* utility routines to access page/offset/len of the xdp multi-buffer ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20net: mvneta: move rxq->left_size on the stackLorenzo Bianconi1-16/+13
Allocate rxq->left_size on mvneta_rx_swbm stack since it is used just in sw bm napi_poll Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20net: mvneta: get rid of skb in mvneta_rx_queueLorenzo Bianconi1-6/+0
Remove skb pointer in mvneta_rx_queue data structure since it is no longer used Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20net: mvneta: drop all fragments in XDP_DROPLorenzo Bianconi1-14/+12
Release all consumed pages if the eBPF program returns XDP_DROP for XDP multi-buffers Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20net: mvneta: move mvneta_run_xdp after descriptors processingLorenzo Bianconi1-15/+7
Move mvneta_run_xdp routine after all descriptor processing. This is a preliminary patch to enable multi-buffers and JUMBO frames support for XDP Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20net: mvneta: move skb build after descriptors processingLorenzo Bianconi1-57/+101
Move skb build after all descriptors processing. This is a preliminary patch to enable multi-buffers and JUMBO frames support for XDP. Introduce mvneta_xdp_put_buff routine to release all pages used by a XDP multi-buffer Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20xdp: introduce xdp_get_shared_info_from_{buff, frame} utility routinesLorenzo Bianconi1-0/+15
Introduce xdp_get_shared_info_from_{buff,frame} utility routines to get skb_shared_info from xdp buffer/frame pointer. xdp_get_shared_info_from_{buff,frame} will be used to implement xdp multi-buffer support Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20Merge branch 'do-a-single-memdup_user-in-sctp_setsockopt-v2'David S. Miller1-722/+477
Christoph Hellwig says: ==================== do a single memdup_user in sctp_setsockopt v2 here is a resend of my series to lift the copy_from_user out of the individual sctp sockopt handlers into the main sctp_setsockopt routine. Changes since v1: - fixes a few sizeof calls. - use memzero_explicit in sctp_setsockopt_auth_key instead of special casing it for a kzfree in the caller - remove some minor cleanups from sctp_setsockopt_autoclose to keep it closer to the existing version - add another little only vaguely related cleanup patch ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: remove the out_nounlock label in sctp_setsockoptChristoph Hellwig1-4/+2
This is just used once, and a direct return for the redirect to the AF case is much easier to follow than jumping to the end of a very long function. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_pf_exposeChristoph Hellwig1-14/+8
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_ecn_supportedChristoph Hellwig1-12/+6
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_auth_supportedChristoph Hellwig1-13/+7
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_eventChristoph Hellwig1-12/+6
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_eventChristoph Hellwig1-20/+15
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_reuse_portChristoph Hellwig1-8/+3
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_interleaving_supportedChristoph Hellwig1-24/+10
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_scheduler_valueChristoph Hellwig1-16/+10
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_schedulerChristoph Hellwig1-19/+14
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_add_streamsChristoph Hellwig1-17/+7
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_reset_assocChristoph Hellwig1-18/+7
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_reset_streamsChristoph Hellwig1-15/+5
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_enable_strresetChristoph Hellwig1-20/+14
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_reconfig_supportedChristoph Hellwig1-12/+6
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_default_prinfoChristoph Hellwig1-25/+20
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_pr_supportedChristoph Hellwig1-10/+6
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_recvnxtinfoChristoph Hellwig1-8/+3
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_recvrcvinfoChristoph Hellwig1-8/+3
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_paddr_thresholdsChristoph Hellwig1-29/+26
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_auto_asconfChristoph Hellwig1-9/+6
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_deactivate_keyChristoph Hellwig1-15/+13
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_del_keyChristoph Hellwig1-15/+12
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_active_keyChristoph Hellwig1-15/+12
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_auth_keyChristoph Hellwig1-8/+2
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Adapt sctp_setsockopt to use a kzfree for this case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: switch sctp_setsockopt_auth_key to use memzero_explicitChristoph Hellwig1-1/+2
Switch from kzfree to sctp_setsockopt_auth_key + kfree to prepare for moving the kfree to common code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_hmac_identChristoph Hellwig1-16/+5
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_auth_chunkChristoph Hellwig1-7/+4
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_maxburstChristoph Hellwig1-19/+16
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_fragment_interleaveChristoph Hellwig1-8/+3
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_contextChristoph Hellwig1-15/+13
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_adaptation_layerChristoph Hellwig1-7/+4
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_maxsegChristoph Hellwig1-11/+11
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_mappedv4Christoph Hellwig1-6/+4
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_associnfoChristoph Hellwig1-16/+16
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_rtoinfoChristoph Hellwig1-14/+12
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_nodelayChristoph Hellwig1-8/+3
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_peer_primary_addrChristoph Hellwig1-12/+9
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_primary_addrChristoph Hellwig1-9/+5
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_default_sndinfoChristoph Hellwig1-26/+23
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-20sctp: pass a kernel pointer to sctp_setsockopt_default_send_paramChristoph Hellwig1-30/+26
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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