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iproute2/include/mnl_utils.h

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lib: Extract from devlink/mnlg a helper, mnlu_socket_open() This little dance of mnl_socket_open(), option setting, and bind, is the same regardless of tool. Extract into a new module that should hold helpers for working with libmnl, mnl_util.c. Signed-off-by: Petr Machata <me@pmachata.org> Signed-off-by: David Ahern <dsahern@gmail.com>
2020-11-13 06:24:41 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MNL_UTILS_H__
#define __MNL_UTILS_H__ 1
utils: Add generic socket helpers Subsequent patch needs to (a) query and use socket family (b) send/receive messages using this family Hence add helper routines to open, close, query family and to perform send receive operations. Signed-off-by: Parav Pandit <parav@nvidia.com> Signed-off-by: David Ahern <dsahern@kernel.org>
2021-02-11 02:34:43 +08:00
struct mnlu_gen_socket {
struct mnl_socket *nl;
char *buf;
uint32_t family;
utils: extract CTRL_ATTR_MAXATTR and save it mnlu_gen_socket_open opens a socket and configures it for use with a generic netlink family. As part of this process it sends a CTRL_CMD_GETFAMILY to get the ID for the family name requested. In addition to the family id, this command reports a few other useful values including the maximum attribute. The maximum attribute is useful in order to know whether a given attribute is supported and for knowing the necessary size to allocate for other operations such as policy dumping. Since we already have to issue a CTRL_CMD_GETFAMILY to get the id, we can also store the maximum attribute as well. Modify the callback functions to parse the maximum attribute NLA and store it in the mnlu_gen_socket structure. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David Ahern <dsahern@kernel.org>
2022-08-27 02:17:41 +08:00
uint32_t maxattr;
utils: Add generic socket helpers Subsequent patch needs to (a) query and use socket family (b) send/receive messages using this family Hence add helper routines to open, close, query family and to perform send receive operations. Signed-off-by: Parav Pandit <parav@nvidia.com> Signed-off-by: David Ahern <dsahern@kernel.org>
2021-02-11 02:34:43 +08:00
unsigned int seq;
uint8_t version;
};
int mnlu_gen_socket_open(struct mnlu_gen_socket *nlg, const char *family_name,
uint8_t version);
void mnlu_gen_socket_close(struct mnlu_gen_socket *nlg);
utils: Introduce helper routines for generic socket recv Introduce helper for generic socket receive helper and introduce helper to build command with custom family and version. Use API in subsequent devlink patch. Signed-off-by: Parav Pandit <parav@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David Ahern <dsahern@kernel.org>
2021-03-01 18:56:52 +08:00
struct nlmsghdr *
_mnlu_gen_socket_cmd_prepare(struct mnlu_gen_socket *nlg,
uint8_t cmd, uint16_t flags,
uint32_t id, uint8_t version);
utils: Add generic socket helpers Subsequent patch needs to (a) query and use socket family (b) send/receive messages using this family Hence add helper routines to open, close, query family and to perform send receive operations. Signed-off-by: Parav Pandit <parav@nvidia.com> Signed-off-by: David Ahern <dsahern@kernel.org>
2021-02-11 02:34:43 +08:00
struct nlmsghdr *mnlu_gen_socket_cmd_prepare(struct mnlu_gen_socket *nlg,
uint8_t cmd, uint16_t flags);
int mnlu_gen_socket_sndrcv(struct mnlu_gen_socket *nlg, const struct nlmsghdr *nlh,
mnl_cb_t data_cb, void *data);
lib: Extract from devlink/mnlg a helper, mnlu_socket_open() This little dance of mnl_socket_open(), option setting, and bind, is the same regardless of tool. Extract into a new module that should hold helpers for working with libmnl, mnl_util.c. Signed-off-by: Petr Machata <me@pmachata.org> Signed-off-by: David Ahern <dsahern@gmail.com>
2020-11-13 06:24:41 +08:00
struct mnl_socket *mnlu_socket_open(int bus);
lib: Extract from devlink/mnlg a helper, mnlu_msg_prepare() Allocation of a new netlink message with the two usual headers is reusable with other netlink netlink message types. Extract it into a helper, mnlu_msg_prepare(). Take the second header as an argument, instead of passing in parameters to initialize it, and copy it in. Signed-off-by: Petr Machata <me@pmachata.org> Signed-off-by: David Ahern <dsahern@gmail.com>
2020-11-13 06:24:42 +08:00
struct nlmsghdr *mnlu_msg_prepare(void *buf, uint32_t nlmsg_type, uint16_t flags,
void *extra_header, size_t extra_header_size);
lib: Extract from devlink/mnlg a helper, mnlu_socket_recv_run() Receiving a message in libmnl is a somewhat involved operation. Devlink's mnlg library has an implementation that is going to be handy for other tools as well. Extract it into a new helper. Signed-off-by: Petr Machata <me@pmachata.org> Signed-off-by: David Ahern <dsahern@gmail.com>
2020-11-13 06:24:43 +08:00
int mnlu_socket_recv_run(struct mnl_socket *nl, unsigned int seq, void *buf, size_t buf_size,
mnl_cb_t cb, void *data);
utils: Introduce helper routines for generic socket recv Introduce helper for generic socket receive helper and introduce helper to build command with custom family and version. Use API in subsequent devlink patch. Signed-off-by: Parav Pandit <parav@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David Ahern <dsahern@kernel.org>
2021-03-01 18:56:52 +08:00
int mnlu_gen_socket_recv_run(struct mnlu_gen_socket *nlg, mnl_cb_t cb,
void *data);
lib: Extract from devlink/mnlg a helper, mnlu_socket_open() This little dance of mnl_socket_open(), option setting, and bind, is the same regardless of tool. Extract into a new module that should hold helpers for working with libmnl, mnl_util.c. Signed-off-by: Petr Machata <me@pmachata.org> Signed-off-by: David Ahern <dsahern@gmail.com>
2020-11-13 06:24:41 +08:00
#endif /* __MNL_UTILS_H__ */
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