From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xin Long Date: Tue, 13 Oct 2020 07:27:33 +0000 Subject: [PATCHv3 net-next 08/16] sctp: add SCTP_REMOTE_UDP_ENCAPS_PORT sockopt Message-Id: <08854ecf72eee34d3e98e30def6940d94f97fdef.1602574012.git.lucien.xin@gmail.com> List-Id: References: <7159fb58f44f9ff00ca5b3b8a26ee3aa2fd1bf8a.1602574012.git.lucien.xin@gmail.com> <37e9f70ffb9dea1572025b8e1c4b1f1c6e6b3da5.1602574012.git.lucien.xin@gmail.com> In-Reply-To: <37e9f70ffb9dea1572025b8e1c4b1f1c6e6b3da5.1602574012.git.lucien.xin@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: network dev , linux-sctp@vger.kernel.org Cc: Marcelo Ricardo Leitner , Neil Horman , Michael Tuexen , davem@davemloft.net, gnault@redhat.com, pabeni@redhat.com, willemdebruijn.kernel@gmail.com This patch is to implement: rfc6951#section-6.1: Get or Set the Remote UDP Encapsulation Port Number with the param of the struct: struct sctp_udpencaps { sctp_assoc_t sue_assoc_id; struct sockaddr_storage sue_address; uint16_t sue_port; }; the encap_port of sock, assoc or transport can be changed by users, which also means it allows the different transports of the same asoc to have different encap_port value. v1->v2: - no change. v2->v3: - fix the endian warning when setting values between encap_port and sue_port. Signed-off-by: Xin Long --- include/uapi/linux/sctp.h | 7 +++ net/sctp/socket.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 121 insertions(+) diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h index 28ad40d..cb78e7a 100644 --- a/include/uapi/linux/sctp.h +++ b/include/uapi/linux/sctp.h @@ -140,6 +140,7 @@ typedef __s32 sctp_assoc_t; #define SCTP_ECN_SUPPORTED 130 #define SCTP_EXPOSE_POTENTIALLY_FAILED_STATE 131 #define SCTP_EXPOSE_PF_STATE SCTP_EXPOSE_POTENTIALLY_FAILED_STATE +#define SCTP_REMOTE_UDP_ENCAPS_PORT 132 /* PR-SCTP policies */ #define SCTP_PR_SCTP_NONE 0x0000 @@ -1197,6 +1198,12 @@ struct sctp_event { uint8_t se_on; }; +struct sctp_udpencaps { + sctp_assoc_t sue_assoc_id; + struct sockaddr_storage sue_address; + uint16_t sue_port; +}; + /* SCTP Stream schedulers */ enum sctp_sched_type { SCTP_SS_FCFS, diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 09b94cd..26e464b 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4417,6 +4417,55 @@ static int sctp_setsockopt_pf_expose(struct sock *sk, return retval; } +static int sctp_setsockopt_encap_port(struct sock *sk, + struct sctp_udpencaps *encap, + unsigned int optlen) +{ + struct sctp_association *asoc; + struct sctp_transport *t; + __be16 encap_port; + + if (optlen != sizeof(*encap)) + return -EINVAL; + + /* If an address other than INADDR_ANY is specified, and + * no transport is found, then the request is invalid. + */ + encap_port = (__force __be16)encap->sue_port; + if (!sctp_is_any(sk, (union sctp_addr *)&encap->sue_address)) { + t = sctp_addr_id2transport(sk, &encap->sue_address, + encap->sue_assoc_id); + if (!t) + return -EINVAL; + + t->encap_port = encap_port; + return 0; + } + + /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the + * socket is a one to many style socket, and an association + * was not found, then the id was invalid. + */ + asoc = sctp_id2assoc(sk, encap->sue_assoc_id); + if (!asoc && encap->sue_assoc_id != SCTP_FUTURE_ASSOC && + sctp_style(sk, UDP)) + return -EINVAL; + + /* If changes are for association, also apply encap to each + * transport. + */ + if (asoc) { + list_for_each_entry(t, &asoc->peer.transport_addr_list, + transports) + t->encap_port = encap_port; + + return 0; + } + + sctp_sk(sk)->encap_port = encap_port; + return 0; +} + /* API 6.2 setsockopt(), getsockopt() * * Applications use setsockopt() and getsockopt() to set or retrieve @@ -4636,6 +4685,9 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE: retval = sctp_setsockopt_pf_expose(sk, kopt, optlen); break; + case SCTP_REMOTE_UDP_ENCAPS_PORT: + retval = sctp_setsockopt_encap_port(sk, kopt, optlen); + break; default: retval = -ENOPROTOOPT; break; @@ -7791,6 +7843,65 @@ static int sctp_getsockopt_pf_expose(struct sock *sk, int len, return retval; } +static int sctp_getsockopt_encap_port(struct sock *sk, int len, + char __user *optval, int __user *optlen) +{ + struct sctp_association *asoc; + struct sctp_udpencaps encap; + struct sctp_transport *t; + __be16 encap_port; + + if (len < sizeof(encap)) + return -EINVAL; + + len = sizeof(encap); + if (copy_from_user(&encap, optval, len)) + return -EFAULT; + + /* If an address other than INADDR_ANY is specified, and + * no transport is found, then the request is invalid. + */ + if (!sctp_is_any(sk, (union sctp_addr *)&encap.sue_address)) { + t = sctp_addr_id2transport(sk, &encap.sue_address, + encap.sue_assoc_id); + if (!t) { + pr_debug("%s: failed no transport\n", __func__); + return -EINVAL; + } + + encap_port = t->encap_port; + goto out; + } + + /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the + * socket is a one to many style socket, and an association + * was not found, then the id was invalid. + */ + asoc = sctp_id2assoc(sk, encap.sue_assoc_id); + if (!asoc && encap.sue_assoc_id != SCTP_FUTURE_ASSOC && + sctp_style(sk, UDP)) { + pr_debug("%s: failed no association\n", __func__); + return -EINVAL; + } + + if (asoc) { + encap_port = asoc->encap_port; + goto out; + } + + encap_port = sctp_sk(sk)->encap_port; + +out: + encap.sue_port = (__force uint16_t)encap_port; + if (copy_to_user(optval, &encap, len)) + return -EFAULT; + + if (put_user(len, optlen)) + return -EFAULT; + + return 0; +} + static int sctp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen) { @@ -8011,6 +8122,9 @@ static int sctp_getsockopt(struct sock *sk, int level, int optname, case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE: retval = sctp_getsockopt_pf_expose(sk, len, optval, optlen); break; + case SCTP_REMOTE_UDP_ENCAPS_PORT: + retval = sctp_getsockopt_encap_port(sk, len, optval, optlen); + break; default: retval = -ENOPROTOOPT; break; -- 2.1.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22708C433E7 for ; Tue, 13 Oct 2020 07:28:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D016D2063A for ; Tue, 13 Oct 2020 07:28:53 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Tue, 13 Oct 2020 00:28:51 -0700 (PDT) From: Xin Long To: network dev , linux-sctp@vger.kernel.org Cc: Marcelo Ricardo Leitner , Neil Horman , Michael Tuexen , davem@davemloft.net, gnault@redhat.com, pabeni@redhat.com, willemdebruijn.kernel@gmail.com Subject: [PATCHv3 net-next 08/16] sctp: add SCTP_REMOTE_UDP_ENCAPS_PORT sockopt Date: Tue, 13 Oct 2020 15:27:33 +0800 Message-ID: <08854ecf72eee34d3e98e30def6940d94f97fdef.1602574012.git.lucien.xin@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <37e9f70ffb9dea1572025b8e1c4b1f1c6e6b3da5.1602574012.git.lucien.xin@gmail.com> References: <7159fb58f44f9ff00ca5b3b8a26ee3aa2fd1bf8a.1602574012.git.lucien.xin@gmail.com> <37e9f70ffb9dea1572025b8e1c4b1f1c6e6b3da5.1602574012.git.lucien.xin@gmail.com> In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-sctp@vger.kernel.org Message-ID: <20201013072733.URcbISJWTcCmOfEDMyIjvNjsI2PDORt-2okKQ0j_FvI@z> This patch is to implement: rfc6951#section-6.1: Get or Set the Remote UDP Encapsulation Port Number with the param of the struct: struct sctp_udpencaps { sctp_assoc_t sue_assoc_id; struct sockaddr_storage sue_address; uint16_t sue_port; }; the encap_port of sock, assoc or transport can be changed by users, which also means it allows the different transports of the same asoc to have different encap_port value. v1->v2: - no change. v2->v3: - fix the endian warning when setting values between encap_port and sue_port. Signed-off-by: Xin Long --- include/uapi/linux/sctp.h | 7 +++ net/sctp/socket.c | 114 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 121 insertions(+) diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h index 28ad40d..cb78e7a 100644 --- a/include/uapi/linux/sctp.h +++ b/include/uapi/linux/sctp.h @@ -140,6 +140,7 @@ typedef __s32 sctp_assoc_t; #define SCTP_ECN_SUPPORTED 130 #define SCTP_EXPOSE_POTENTIALLY_FAILED_STATE 131 #define SCTP_EXPOSE_PF_STATE SCTP_EXPOSE_POTENTIALLY_FAILED_STATE +#define SCTP_REMOTE_UDP_ENCAPS_PORT 132 /* PR-SCTP policies */ #define SCTP_PR_SCTP_NONE 0x0000 @@ -1197,6 +1198,12 @@ struct sctp_event { uint8_t se_on; }; +struct sctp_udpencaps { + sctp_assoc_t sue_assoc_id; + struct sockaddr_storage sue_address; + uint16_t sue_port; +}; + /* SCTP Stream schedulers */ enum sctp_sched_type { SCTP_SS_FCFS, diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 09b94cd..26e464b 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4417,6 +4417,55 @@ static int sctp_setsockopt_pf_expose(struct sock *sk, return retval; } +static int sctp_setsockopt_encap_port(struct sock *sk, + struct sctp_udpencaps *encap, + unsigned int optlen) +{ + struct sctp_association *asoc; + struct sctp_transport *t; + __be16 encap_port; + + if (optlen != sizeof(*encap)) + return -EINVAL; + + /* If an address other than INADDR_ANY is specified, and + * no transport is found, then the request is invalid. + */ + encap_port = (__force __be16)encap->sue_port; + if (!sctp_is_any(sk, (union sctp_addr *)&encap->sue_address)) { + t = sctp_addr_id2transport(sk, &encap->sue_address, + encap->sue_assoc_id); + if (!t) + return -EINVAL; + + t->encap_port = encap_port; + return 0; + } + + /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the + * socket is a one to many style socket, and an association + * was not found, then the id was invalid. + */ + asoc = sctp_id2assoc(sk, encap->sue_assoc_id); + if (!asoc && encap->sue_assoc_id != SCTP_FUTURE_ASSOC && + sctp_style(sk, UDP)) + return -EINVAL; + + /* If changes are for association, also apply encap to each + * transport. + */ + if (asoc) { + list_for_each_entry(t, &asoc->peer.transport_addr_list, + transports) + t->encap_port = encap_port; + + return 0; + } + + sctp_sk(sk)->encap_port = encap_port; + return 0; +} + /* API 6.2 setsockopt(), getsockopt() * * Applications use setsockopt() and getsockopt() to set or retrieve @@ -4636,6 +4685,9 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE: retval = sctp_setsockopt_pf_expose(sk, kopt, optlen); break; + case SCTP_REMOTE_UDP_ENCAPS_PORT: + retval = sctp_setsockopt_encap_port(sk, kopt, optlen); + break; default: retval = -ENOPROTOOPT; break; @@ -7791,6 +7843,65 @@ static int sctp_getsockopt_pf_expose(struct sock *sk, int len, return retval; } +static int sctp_getsockopt_encap_port(struct sock *sk, int len, + char __user *optval, int __user *optlen) +{ + struct sctp_association *asoc; + struct sctp_udpencaps encap; + struct sctp_transport *t; + __be16 encap_port; + + if (len < sizeof(encap)) + return -EINVAL; + + len = sizeof(encap); + if (copy_from_user(&encap, optval, len)) + return -EFAULT; + + /* If an address other than INADDR_ANY is specified, and + * no transport is found, then the request is invalid. + */ + if (!sctp_is_any(sk, (union sctp_addr *)&encap.sue_address)) { + t = sctp_addr_id2transport(sk, &encap.sue_address, + encap.sue_assoc_id); + if (!t) { + pr_debug("%s: failed no transport\n", __func__); + return -EINVAL; + } + + encap_port = t->encap_port; + goto out; + } + + /* Get association, if assoc_id != SCTP_FUTURE_ASSOC and the + * socket is a one to many style socket, and an association + * was not found, then the id was invalid. + */ + asoc = sctp_id2assoc(sk, encap.sue_assoc_id); + if (!asoc && encap.sue_assoc_id != SCTP_FUTURE_ASSOC && + sctp_style(sk, UDP)) { + pr_debug("%s: failed no association\n", __func__); + return -EINVAL; + } + + if (asoc) { + encap_port = asoc->encap_port; + goto out; + } + + encap_port = sctp_sk(sk)->encap_port; + +out: + encap.sue_port = (__force uint16_t)encap_port; + if (copy_to_user(optval, &encap, len)) + return -EFAULT; + + if (put_user(len, optlen)) + return -EFAULT; + + return 0; +} + static int sctp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen) { @@ -8011,6 +8122,9 @@ static int sctp_getsockopt(struct sock *sk, int level, int optname, case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE: retval = sctp_getsockopt_pf_expose(sk, len, optval, optlen); break; + case SCTP_REMOTE_UDP_ENCAPS_PORT: + retval = sctp_getsockopt_encap_port(sk, len, optval, optlen); + break; default: retval = -ENOPROTOOPT; break; -- 2.1.0