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2022-12-05net: ping6: Add ping6 commandViacheslav Mitrofanov
Implement ping6 command to ping hosts using IPv6. It works the same way as an ordinary ping command. There is no ICMP request so it is not possible to ping our host. This patch adds options in Kconfig and Makefile to build ping6 command. Series-changes: 3 - Added structures and functions descriptions - Added to ping6_receive() return value instead of void Series-changes: 4 - Fixed structures and functions description style Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov@yadro.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2022-12-05net: ipv6: Add implementation of main IPv6 functionsViacheslav Mitrofanov
Functions that were exposed in "net: ipv6: Add IPv6 basic primitives" had only empty implementations and were exposed as API for futher patches. This patch add implementation of these functions. Main functions are: net_ip6_handler() - IPv6 packet handler for incoming packets; net_send_udp_packet6() - make up and send an UDP packet; csum_ipv6_magic() - compute checksum of IPv6 "psuedo-header" per RFC2460 section 8.1; ip6_addr_in_subnet() - check if an address is in our subnet. Other functions are auxiliary. Series-changes: 3 - Added comments - Fixed style problems - Fixed return codes instead of -1 Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov@yadro.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2022-12-05net: ipv6: Add string_to_ip6 converterViacheslav Mitrofanov
This functions is used as a converter from IPv6 address string notation to struct ip6_addr that is used everywhere in IPv6 implementation. For example it is used to parse and convert IPv6 address from tftpboot command. Conversion algorithm uses two passes, first to verify syntax and locate colons and second pass to read the address. In case of valid IPv6 address it returns 0. Examples of valid strings: 2001:db8::0:1234:1 2001:0db8:0000:0000:0000:0000:1234:0001 ::1 ::ffff:192.168.1.1 Examples of invalid strings 2001:db8::0::0 (:: can only appear once) 2001:db8:192.168.1.1::1 (v4 part can only appear at the end) 192.168.1.1 (we don't implicity map v4) Series-changes: 3 - Added function description - Added length parameter to string_to_ip6() Series-changes: 4 - Fixed function description style Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov@yadro.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2022-12-05net: ipv6: Add IPv6 basic primitivesViacheslav Mitrofanov
This patch is a collection of basic primitives that are prerequisite for further IPv6 implementation. There are structures definition such as IPv6 header, UDP header (for TFTP), ICMPv6 header. There are auxiliary defines such as protocol codes, padding, struct size and etc. Also here are functions prototypes and its empty implementation that will be used as API for further patches. Here are variables declaration such as IPv6 address of our host, gateway, ipv6 server. Series-changes: 3 - Added functions and structures descriptions - Removed enums ND_OPT_*. It will be moved into further patches - Substituted -1 for error codes Series-changes: 4 - Changed functions and structures description style Signed-off-by: Viacheslav Mitrofanov <v.v.mitrofanov@yadro.com> Reviewed-by: Ramon Fried <rfried.dev@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>